BoP Lab / Michelin Raceway Road Atlanta

FP + SMSE + AS + SM at Michelin Raceway Road Atlanta

SMSE has no laps in the events chosen. It ran at SARRC 2020: add that event.

One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Jarrett Jones in Super Tour Mar 2025 Morning test (1:26.895; the car's best in any other session was 1:43.195 and the rest of the class's best all week 1:42.071).

Official results win over the timing feed: the live timing recorded a 1:42.553 for Charles Mactutus in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.504 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.911 for Danny Steyn in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.690 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.688 for Jim Drago in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.318 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.913 for Raiden Nicol in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.515 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.756 for Brian Henderson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.096 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.933 for Logan Stretch in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.826 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.383 for Nick Leverone in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.408 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.638 for Junior Brock in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.311 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.631 for Spencer Lofton in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.830 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.528 for Brett Kowalski in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.832 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.568 for Skyler Cottrell in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.287 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.534 for Sam Craven in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.619 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.394 for Jonathan Neudorf in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.545 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.129 for Zack Barfield in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.020 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.430 for Frankie Barroso in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.282 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.206 for Julian DaCosta in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.289 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.158 for Matt Stretch in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.592 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.107 for Noah Harmon in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.660 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.334 for Maximilian Opalski in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.153 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.986 for Greg Sorg in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:51.698 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.965 for Nicholas Bruni in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:44.567 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.260 for Cliff Brown in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.870 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.003 for Jordan Rick Segrini in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:47.046 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.891 for Anthony Geraci in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:48.141 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.753 for Sean Noonan in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:46.181 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.374 for Logan Cozzie in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.752 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.111 for Steven Clemons JR in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:48.900 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.397 for Will Robinson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:45.996 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.242 for Domenico Leuci in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.426 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.317 for Grant Janish in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.890 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.939 for Mickey Moran in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.907 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.567 for Max Schweid in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.347 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.798 for Thomas Paolino in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.173 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.296 for Rob Trollinger in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:58.758 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.409 for Jesse Singer in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:47.177 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.224 for Aaron Parkinson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.509 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.672 for Randall Joe in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.432 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.746 for David Henderson in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.282 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.011 for Chris Clarke in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:49.216 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.485 for Bailey Sigler in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:50.601 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.080 for Marcos Vento in Super Tour Mar 2023 Grp 5 SM Race 1, but the official results credit 1:52.737 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:38.568 for Mason Workman in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:41.850 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.671 for Perry Simonds in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:42.681 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.473 for Mark Weber in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:58.872 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:52.000 for Gregg Seigart in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:59.629 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.139 for Anthony Geraci in Super Tour Mar 2023 Grp 5 SM Race 2, but the official results credit 1:48.141 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:56.565 for Olivier Piatek in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 8:44.184 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:56.086 for Chris Haldeman in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 2:17.873 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:58.284 for Boris Said Jr in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 2:00.222 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:55.847 for Sean Varwig in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 7:18.719 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:57.123 for Jesse Singer in Super Tour Mar 2024 Grp 1 SM Race 1, but the official results credit 2:07.342 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 7:18.676 for Sean Varwig in Super Tour Mar 2024 Grp 1 SM Race 2, but the official results credit 7:18.719 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.332 for Stephen Simonds in Super Tour Mar 2025 Grp 6 EP FP HP B-Spec Race 1, but the official results credit 1:40.560 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.676 for Mark Weber in Super Tour Mar 2025 Grp 6 EP FP HP B-Spec Race 1, but the official results credit 1:42.215 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.319 for Javier Rodriguez in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 2:22.040 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.827 for Christopher Girem in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 1:46.966 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.688 for Alfred Wingo in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 1:48.853 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.947 for Warren Sackman in Super Tour Mar 2025 Grp 7 SM Race 1, but the official results credit 1:52.634 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.022 for Skyler Cottrell in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.112 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.042 for John Salerno in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.662 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.939 for Max Stallone in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.004 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.987 for Logan Stretch in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.919 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.611 for Charles Mactutus in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.935 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.164 for Bobby Gossett in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.037 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.611 for Travis Wiley in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.132 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.822 for James Newell in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.988 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.619 for Stanley Brock Jr in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.397 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.520 for Stuart Mcaleer in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.545 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.629 for Dean Dybdahl in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:52.285 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.738 for Francisco Barroso in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.756 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.158 for David Stern in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.549 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.262 for Zach Ehrlich in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.441 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.419 for Will Robinson in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.624 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.780 for Cliff Brown in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.481 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.301 for Ryan Kipke in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.380 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.029 for Marc Cefalo in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.168 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.503 for Jack Murchison in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.279 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.148 for Danny Steyn in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.656 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.388 for Christian Meyer in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.147 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.685 for Chris Allen in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:53.628 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.820 for Ryan Maloney in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.505 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.917 for Gianni Maiuro in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.584 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.304 for Bob Mueller Jr in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.642 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:43.939 for Colin Murchison in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.858 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.115 for Ben Gaunt in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.883 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.841 for Ellie Gossett in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.970 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.818 for Gavin Vaughan in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.441 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.760 for Chase Kovatch in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:01.454 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.331 for Casey Moseley in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:54.440 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.902 for Graham Jacobson in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.633 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.189 for Greg Bogart in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.701 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.562 for Scott Phillips in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:55.262 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:45.845 for John Hamner in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.946 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.359 for Christopher Girem in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:02.861 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.824 for Riley Haig in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:59.410 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.922 for Cohen Craft in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.152 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.861 for Lucas Jensen in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:56.783 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.986 for Tal Tsfany in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:59.065 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.037 for Robert Garrison in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 1:57.475 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:49.958 for Alex Rubenstein in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:04.082 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:50.229 for Brayton Williams in Super Tour Mar 2026 Grp 1 SM Race 1, but the official results credit 2:06.066 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.600 for Ken Kannard in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:48.771 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.386 for Cliff Ira in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:48.427 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.177 for Steven Powers in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:48.283 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.165 for Robert Garrison in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:47.908 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too.

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	Ford Mustang	Michael Kamalian	AS	199, 99	1:34.642 A-R1	1:34.569	1:36.558 B-Q1	1:34.642 A-R1	1:36.577 A-R1	+7.895 A-R1	140.9 A-R1	37.067 A-R1	33.474 A-R1	24.028 A-R1
2	Ford Mustang (2003)	Thomas J Ellis	AS	51	1:35.351 B-R2	1:34.701	1:35.467 B-Q2	1:35.351 B-R2	1:36.206 B-R2	+1.450 B-R2	138.3 B-R2	37.678 B-R2	32.639 B-Q2	24.384 B-R2
3	Ford Mustang (2006)	Gregory Eaton	AS	21	1:35.692 B-R2	1:35.295	1:36.767 B-Q2	1:35.692 B-R2	1:36.001 B-R2	+0.932 B-R2	132.5 B-R2	37.336 B-R2	33.408 B-Q2	24.551 B-R2
4	Ford Mustang GT (2008)	James Jost	AS	14	1:36.389 B-R2	1:35.532	1:38.195 B-Q2	1:36.389 B-R2	1:37.112 B-R2	+1.514 B-R2	138.6 B-Q1	38.069 B-R1	32.794 B-R2	24.669 B-R2
5	Acura Integra	Ken Kannard	FP	51	1:37.623 C-R2	sector data unreliable	1:37.924 C-Q2	1:37.623 C-R2	1:38.167 C-R2	+1.332 C-R2	122.9 A-Q1	37.585	0.792	24.740
6	Mazda Miata (1992)	Mason Workman	FP	52	1:38.226 B-Q2	1:37.974	1:38.226 B-Q2	1:38.805 C-R2	1:39.090 C-R2	+2.802 C-R2	120.2 D-Q2	37.238 C-Q2	35.576 D-Q2	25.160 D-Q2
7	Honda CRX (1988)	Chris Bovis	FP	178	1:38.576 B-Q1	1:38.061	1:38.576 B-Q1	1:38.655 B-R2	1:40.253 B-R1	+1.209 B-R1	117.3 B-R2	37.788 B-Q2	35.332 B-R2	24.941 B-Q1
8	BMW 325es	Matt Reppert	FP	88	1:38.885 D-Q2	1:38.656	1:38.885 D-Q2	1:38.946 D-R1	1:39.189 D-R1	+0.711 D-R1	122.1 D-R1	37.730 D-R1	35.717 D-R1	25.209 D-Q2
9	Honda Civic Del Sol VTEC	Cliff Ira	FP	36	1:39.502 A-Q1	1:38.814	1:39.502 A-Q1	1:48.427 A-R2	1:48.964 A-R2	+6.135 A-R2	123.3 A-Q1	38.104 A-Q1	35.234 A-Q1	25.476 A-Q1
10	Mazda MIata	Steven Powers	FP	145	1:40.329 A-Q2	1:40.226	1:40.329 A-Q2	1:48.283 A-R2	1:49.211 A-R2	+3.905 A-R2	118.4 A-Q2	38.142 A-Q2	36.400 A-Q2	25.684 A-Q2
11	Mazda Miata (1990)	Stephen Simonds	FP	63	1:40.560 B-R2	sector data unreliable	1:40.686 B-Q2	1:40.560 B-R2	1:40.971 B-R2	+1.297 B-R2	113.4 B-R2	38.314	0.778	25.592
12	Mazda Miata (1992)	Peter Tonelli II 2+ cars	FP	91	1:41.072 C-R2	1:40.896	1:41.593 C-Q2	1:41.072 C-R2	1:42.201 C-R2	+2.934 C-R2	106.7 C-R2	38.226 C-Q2	36.798 C-R2	25.872 C-R2
13	Mazda Miata	Robert Garrison 2+ cars	FP	06	1:41.644 A-Q1	1:41.563	1:41.644 A-Q1	1:47.908 A-R2	1:49.665 A-R2	+5.548 A-R2	119.0 A-R2	38.892 A-Q1	36.536 A-Q1	26.135 A-Q1
14	Mazda Miata	Perry Simonds	FP	164	1:41.729 D-Q1	1:41.729	1:41.729 D-Q1	1:42.681 D-R2	1:44.666 D-R2	+5.022 D-R2	120.2 D-Q1	40.087 D-R2	36.374 D-Q1	25.814 D-Q1
15	Mazda Miata - FP (1993)	Mark Weber 2+ cars	FP	25	1:41.786 B-Q2	1:41.472	1:41.786 B-Q2	1:42.215 B-R2	1:42.904 B-R2	+2.047 B-R2	114.0 B-R2	39.042 B-Q2	36.275 B-Q2	26.155 B-Q2
16	Mazda Miata (2001)	Stanley Brock Jr	SM	61	1:42.071 B-P	1:42.068	1:42.981 A-Q1	1:43.137 C-R2	1:43.495 B-R2	+0.789 B-R2	111.8 A-Q1	38.166 B-P	37.653 B-P	26.249 B-P
17	Mazda Miata (2001)	Mike Cottrell	SM	29, 99, 9	1:42.324 A-Q1	sector data unreliable	1:42.324 A-Q1	1:43.062 C-R2	1:43.451 B-R2	+0.740 B-R2	111.2 A-Q1	38.237	0.806	25.854
18	Mazda Miata (1999)	John Salerno	SM	34	1:42.453 A-Q1	1:42.453	1:42.453 A-Q1	1:53.662 A-R2	1:54.598 A-R2	+2.961 A-R2	110.9 A-Q1	38.394 A-Q1	37.750 A-Q1	26.309 A-Q1
19	Mazda Miata (2003)	Charles Mactutus	SM	66	1:42.619 D-Q2	1:42.187	1:42.619 D-Q2	1:42.995 C-R2	1:43.388 C-R2	+9.631 C-R2	110.9 A-Q1	38.190 C-Q2	37.772 A-Q1	26.225 A-P
20	Mazda Miata VVTR (2002)	Danny Steyn 2+ cars	SM	39	1:42.620 C-Q1	1:42.496	1:42.620 C-Q1	1:43.008 C-R2	1:43.366 C-R2	+10.314 C-R2	104.6 C-Q2	38.352 C-Q2	37.827 C-Q1	26.317 C-Q1
21	Mazda Miata (1999)	Sean Noonan	SM	0	1:42.625 B-R2	1:42.537	1:42.848 B-Q1	1:42.625 B-R2	1:43.481 B-R2	+1.529 B-R2	109.6 D-R2	38.494 B-R2	37.768 B-P	26.275 B-Q1
22	Mazda Miata (1999)	Danny Steyn 2+ cars	SM	39	1:42.632 D-Q2	1:42.632	1:42.632 D-Q2	1:44.689 D-R2	1:45.424 D-R2	+3.725 D-R2	111.3 D-R2	38.527 A-Q1	38.249 A-Q2	26.254 D-Q2
23	Mazda Miata (2001)	Max Stallone	SM	03, 103	1:42.682 A-Q1	1:42.401	1:42.682 A-Q1	1:43.512 B-R2	1:43.790 B-R2	+0.708 B-R2	110.4 A-Q1	38.387 A-Q1	37.761 A-Q1	26.253 B-P
24	Mazda Miata (2002)	Logan Stretch	SM	98, 89	1:42.684 A-Q1	1:42.593	1:42.684 A-Q1	1:43.065 C-R2	1:43.624 C-R2	+18.097 C-R2	111.6 D-Q2	38.418 D-Q2	37.868 B-R2	26.307 A-Q1
25	Mazda Miata (2001)	Bobby Gossett	SM	44, 144	1:42.699 A-Q1	1:42.386	1:42.699 A-Q1	1:43.267 B-R2	1:43.933 B-R2	+1.454 B-R2	110.2 A-Q1	38.259 A-Q1	37.890 A-Q1	26.237 B-P
26	Mazda Miata (1999)	Travis Wiley	SM	177, 77, 78	1:42.719 A-Q1	1:42.457	1:42.719 A-Q1	1:42.803 B-R2	1:43.374 C-R2	+11.850 C-R2	111.8 A-Q1	38.390 C-Q2	37.841 B-P	26.226 A-Q1
27	Mazda Miata (2000)	James Newell 2+ cars	SM	23	1:42.741 A-Q1	1:42.694	1:42.741 A-Q1	1:52.988 A-R2	1:54.054 A-R2	+4.143 A-R2	112.2 A-Q1	38.581 A-Q1	37.797 A-Q1	26.316 A-Q1
28	Mazda Miata (1999)	Stuart Mcaleer	SM	143, 43	1:42.999 C-R2	1:42.715	1:43.275 A-Q1	1:42.999 C-R2	1:43.798 C-R2	+12.217 C-R2	110.9 A-Q1	38.504 C-R2	37.915 C-R2	26.296 A-Q1
29	Mazda Miata (2005)	Jim Drago	SM	2	1:43.034 D-Q2	1:42.827	1:43.034 D-Q2	1:43.345 C-R2	1:43.896 C-R2	+16.748 C-R2	111.6 D-Q2	38.583 D-Q2	37.940 C-R2	26.304 D-Q2
30	Mazda Miata (1999)	Matthew Novak 2+ cars	SM	11	1:43.052 C-R2	1:42.944	1:43.750 C-Q2	1:43.052 C-R2	1:43.543 C-R2	+14.421 C-R2	104.7 C-R2	38.472 C-R2	37.881 C-R2	26.591 C-R2
31	Mazda Miati (2000)	James Newell 2+ cars	SM	70	1:43.071 B-Q1	1:42.716	1:43.071 B-Q1	1:43.331 B-R2	1:43.706 B-R2	+1.030 B-R2	105.9 B-R2	38.453 B-Q1	37.907 B-Q1	26.356 B-R2
32	Mazda Miata (1999)	Elivan Goulart	SM	72	1:43.085 B-P	1:42.448	1:43.239 B-Q1	1:43.238 B-R2	1:43.493 B-R2	+0.642 B-R2	105.9 B-P, B-Q1	38.503 B-R1	37.783 B-R2	26.162 B-P
33	Mazda Miata (2002)	Jose Ulfe	SM	19	1:43.126 B-R2	1:42.694	1:43.822 B-Q1	1:43.126 B-R2	1:43.669 B-R2	+1.032 B-R2	105.6 B-R2	38.615 B-R2	37.779 B-R2	26.300 B-P
34	Mazda Miata (1999)	Brett Kowalski	SM	15, 115	1:43.136 C-Q1	1:42.975	1:43.136 C-Q1	1:43.251 C-R2	1:44.075 C-R2	+10.872 C-R2	110.7 D-Q2	38.652 C-R2	37.945 C-Q1	26.378 A-Q2
35	Mazda Miata (2002)	Nicholas Bruni	SM	1, 6	1:43.156 C-Q2	1:42.524	1:43.156 C-Q2	1:43.207 C-R2	1:43.552 C-R2	+14.239 C-R2	111.3 D-R1	38.282 C-R2	37.803 C-Q2	26.439 C-Q2
36	Mazda Miata (2000)	Tyler Brown	SM	07	1:43.170 C-R2	1:42.923	1:43.696 C-Q2	1:43.170 C-R2	1:43.501 C-R2	+15.774 C-R2	105.2 C-R2	38.475 C-R2	37.828 C-R2	26.620 C-R2
37	Mazda Miata MX-5 (2002)	Jarrett Jones	SM	86	1:43.195 B-R2	1:42.829	1:43.614 B-Q1	1:43.195 B-R2	1:43.803 B-R2	+1.620 B-R2	106.2 B-R2	38.663 B-R2	37.764 B-R2	26.402 B-R2
38	Mazda Miata (2001)	Christian Meyer	SM	92, 134	1:43.246 B-R2	1:43.028	1:43.732 B-Q1	1:43.246 B-R2	1:43.614 B-R2	+1.440 B-R2	110.0 A-Q2, A-R2	38.696 B-Q1	38.150 B-R2	26.182 B-R2
39	Mazda Miata (2003)	Raiden Nicol	SM	193	1:43.254 D-Q2	1:43.161	1:43.254 D-Q2	1:44.516 D-R2	1:45.143 D-R2	+3.387 D-R2	110.3 D-Q2, D-R1	38.544 D-Q2	38.102 D-Q2	26.515 D-R2
40	Mazda miata	Daniel Williams	SM	28	1:43.270 B-Q1	1:43.035	1:43.270 B-Q1	1:43.466 B-R2	1:44.212 B-R1	+3.486 B-R1	105.9 B-R2	38.703 B-R1	37.954 B-P	26.378 B-Q1
41	Mazda Miata (2001)	Brandon Collins	SM	144	1:43.273 C-R2	1:42.805	1:43.584 C-Q2	1:43.273 C-R2	1:43.600 C-R2	+12.440 C-R2	104.3 C-R2	38.330 C-R2	37.918 C-R2	26.557 C-Q2
42	Mazda Miata (1999)	Dean Dybdahl	SM	90	1:43.300 A-Q1	1:42.948	1:43.300 A-Q1	1:52.284 A-R2	1:52.807 A-R2	+2.623 A-R2	108.4 A-Q1, A-R2	38.857 A-P	37.929 A-Q1	26.162 A-Q1
43	Mazda Miata (2001)	Brian Henderson	SM	9, 97	1:43.323 D-Q2	1:42.855	1:43.323 D-Q2	1:44.097 D-R2	1:44.957 D-R2	+4.046 D-R2	111.7 D-Q2, D-R1	38.481 D-R1	38.018 D-Q2	26.356 D-Q2
44	Mazda Miata (1999)	Will Robinson	SM	5, 51, 151, 193	1:43.353 B-Q1	1:42.747	1:43.353 B-Q1	1:43.391 B-R2	1:44.381 B-R2	+1.513 B-R2	110.7 A-Q1, A-Q2	38.546 A-Q1	37.865 B-P	26.336 B-P
45	Mazda Miata (1999)	Nick Leverone	SM	188, 43, 92, 94	1:43.355 C-R2	1:43.095	1:43.466 D-Q2	1:43.355 C-R2	1:44.147 C-R2	+18.693 C-R2	111.0 D-R2	38.640 C-Q2	37.984 C-R2	26.471 D-Q2
46	Mazda Miata (2004)	Francisco BArroso	SM	48	1:43.360 A-Q1	1:43.196	1:43.360 A-Q1	1:44.528 C-R2	1:45.124 C-R2	+22.191 C-R2	111.6 D-R2	38.833 A-Q2	37.969 A-Q1	26.394 A-Q1
47	Mazda Miata (1999)	Scott Phillips	SM	166	1:43.363 B-R2	1:43.304	1:44.166 B-Q1	1:43.363 B-R2	1:44.389 B-R2	+1.059 B-R2	109.1 A-Q2	38.822 B-R2	38.087 B-R2	26.395 B-R2
48	Mazda Miata (1991)	David Stern	SM	19	1:43.366 A-Q1	1:43.356	1:43.366 A-Q1	1:54.548 A-R2	1:55.331 A-R2	+4.696 A-R2	110.9 A-Q1	38.849 A-Q1	37.936 A-Q1	26.571 A-Q1
49	Mazda Miata (2005)	Senter Smith	SM	55	1:43.367 C-R2	1:43.148	1:43.946 C-Q1	1:43.367 C-R2	1:43.864 C-R2	+15.793 C-R2	103.8 C-Q2	38.557 C-R2	37.910 C-R2	26.681 C-Q1
50	Mazda Miati (1999)	Matthew Novak 2+ cars	SM	11	1:43.380 B-R2	1:43.036	1:44.142 B-Q1	1:43.380 B-R2	1:44.035 B-R1	+3.940 B-R1	106.0 B-P	38.691 B-R1	37.920 B-P	26.425 B-R2
51	Mazda Miata (2001)	Zach Ehrlich	SM	180	1:43.383 A-Q1	1:43.129	1:43.383 A-Q1	1:53.441 A-R2	1:54.790 A-R2	+3.514 A-R2	109.4 A-Q2	38.793 C-Q2	37.991 A-Q1	26.345 A-Q1
52	Mazda Miata (2001)	Justin Gravett	SM	52	1:43.387 B-R2	1:43.213	1:44.335 B-Q1	1:43.387 B-R2	1:44.515 B-R2	+1.611 B-R2	106.2 B-R2	38.660 B-R1	38.156 B-R2	26.397 B-R2
53	Mazda Miata (1999)	Olivier Piatek	SM	62	1:43.431 B-R2	1:43.018	1:43.620 C-Q1	1:43.431 B-R2	1:44.218 B-R2	+1.234 B-R2	105.4 B-R2	38.580 B-R2	38.056 B-R2	26.382 B-R2
54	Mazda Miata (1997)	Cliff Brown	SM	01	1:43.449 A-Q1	1:43.274	1:43.449 A-Q1	1:46.870 D-R2	1:52.970 D-R2	+8.147 D-R2	110.8 A-Q1	38.835 A-Q1	38.014 A-Q1	26.425 A-Q1
55	Mazda Miata (1999)	Andrew Devoto	SM	09	1:43.486 C-R2	1:43.196	1:43.750 C-Q2	1:43.486 C-R2	1:44.130 C-R2	+19.725 C-R2	104.0 C-Q1	38.381 C-R2	38.142 C-Q1	26.673 C-R2
56	Mazda Mazda Miata (2000)	Max Ehrlich	SM	81	1:43.494 C-R2	1:43.342	1:44.097 C-Q2	1:43.494 C-R2	1:44.015 C-R2	+17.198 C-R2	104.0 C-R2	38.721 C-R2	38.076 C-R2	26.545 C-R2
57	Mazda Miata (1999)	Ryan Kipke	SM	44	1:43.531 A-Q1	1:43.403	1:43.531 A-Q1	1:54.379 A-R2	1:54.903 A-R2	+2.588 A-R2	109.4 A-R2	38.689 A-Q1	38.215 A-Q1	26.499 A-Q1
58	Mazda Miata (1999)	Peter Ensor	SM	49	1:43.544 D-Q2	1:43.066	1:43.544 D-Q2	1:45.991 D-R2	1:46.287 D-R2	+3.200 D-R2	111.7 D-Q2	38.731 D-Q2	38.113 D-Q2	26.222 D-Q2
59	Mazda Miata (1997)	Marc Cefalo	SM	00	1:43.554 A-Q1	1:43.440	1:43.554 A-Q1	1:54.168 A-R2	1:54.760 A-R2	+3.864 A-R2	110.2 A-Q2	38.922 A-Q1	37.968 A-Q1	26.550 A-Q1
60	Mazda Miata (2004)	Spencer Lofton	SM	10	1:43.574 D-Q2	1:43.325	1:43.574 D-Q2	1:45.830 D-R2	1:46.949 D-R2	+4.811 D-R2	111.3 D-Q2	38.680 D-Q2	38.136 D-Q2	26.509 D-Q2
61	Mazda Miata (1999)	Luke Pullen	SM	21	1:43.606 C-Q2	1:43.472	1:43.606 C-Q2	1:43.898 C-R2	1:45.425 C-R2	+17.673 C-R2	103.5 C-R2	38.624 C-Q2	38.261 C-R2	26.587 C-R2
62	Mazda Miata (1999)	Jack Murchison	SM	1, 58	1:43.655 A-Q1	1:43.282	1:43.655 A-Q1	1:44.299 B-R2	1:55.060 A-R2	+2.700 A-R2	111.2 A-Q1	38.612 B-Q2	38.136 A-Q1	26.534 A-Q1
63	Mazda Miata (2001)	Chris Haldeman	SM	28	1:43.664 C-Q2	1:43.470	1:43.664 C-Q2	2:17.873 C-R2			102.6 C-Q1, C-Q2	38.724 C-Q2	38.157 C-Q2	26.589 C-Q2
64	Mazda Miata (2001)	Sam Craven	SM	23	1:43.675 D-Q2	1:43.422	1:43.675 D-Q2	1:45.620 D-R2	1:46.263 D-R2	+3.734 D-R2	111.0 D-R2	38.626 D-Q2	38.290 D-Q2	26.506 D-Q2
65	Mazda Miata (1999)	Jonathan Neudorf	SM	95	1:43.751 D-Q2	1:43.081	1:43.751 D-Q2	1:44.545 D-R2	1:45.420 D-R2	+4.134 D-R2	111.2 D-Q2, D-R2	38.627 D-Q2	38.125 D-Q2	26.329 D-R2
66	Mazda Miata (2001)	Mark Curlee	SM	63, 163	1:43.757 B-P	1:43.373	1:44.641 C-Q2	1:44.515 B-R2	1:44.990 B-R2	+0.808 B-R2	110.4 A-R1	38.974 A-Q1	37.846 B-P	26.553 B-P
67	Mazda Miata (1994)	Chris Allen	SM	169	1:43.760 A-Q1	1:43.465	1:43.760 A-Q1	1:53.628 A-R2	1:54.907 A-R2	+3.637 A-R2	111.5 A-Q1	39.115 A-Q2	38.070 A-Q1	26.280 A-Q1
68	Mazda Miata (1999)	Ryan Maloney	SM	15	1:43.766 A-Q1	1:43.290	1:43.766 A-Q1	1:55.506 A-R2	1:57.241 A-R2	+3.651 A-R2	111.2 A-Q1	38.701 A-Q1	38.038 A-Q1	26.551 A-Q1
69	Mazda Miata (2003)	Scott Carlisle	SM	54	1:43.771 B-R2	1:43.737	1:45.433 B-Q1	1:43.771 B-R2	1:44.680 B-R2	+1.210 B-R2	105.5 B-R2	39.068 B-R2	38.150 B-R2	26.519 B-R2
70	Mazda Miata (2003)	Zack Barfield	SM	107	1:43.825 D-Q2	1:43.825	1:43.825 D-Q2	1:46.020 D-R2	1:48.252 D-R2	+5.997 D-R2	109.8 D-Q2, D-R2	40.149 D-R2	38.521 D-Q2	26.552 D-Q2
71	Mazda Miata (2001)	Peter Tonelli II 2+ cars	SM	18	1:43.834 C-R2	1:43.588	1:44.284 C-Q2	1:43.834 C-R2	1:44.960 C-R2	+19.619 C-R2	109.7 A-R1	39.079 A-R1	37.928 C-R2	26.581 C-Q2
72	Mazda Miata (2002)	Boris Said Jr	SM	133	1:43.853 C-Q1	1:43.558	1:43.853 C-Q1	2:00.222 C-R2	2:23.721 C-R1	+5.125 C-R1	103.8 C-Q2	38.791 C-Q1	38.084 C-Q2	26.683 C-Q2
73	Acura Integra	Les Chaney	FP	33	1:43.861 D-R1	1:43.716	1:46.823 D-Q2	1:43.861 D-R1	1:44.600 D-R1	+2.050 D-R1	121.7 D-Q2, D-R1	40.568 D-R1	36.332 D-R1	26.816 D-R1
74	Mazda Miata (2003)	Joseph Federl	SM	121	1:43.880 B-R2	1:43.388	1:44.382 B-Q1	1:43.880 B-R2	1:44.180 B-R2	+1.014 B-R2	104.4 B-R2	38.791 B-Q2	38.211 C-R2	26.386 B-R2
75	Mazda Miata (1999)	Seth Gentry	SM	20	1:43.918 B-R2	1:43.447	1:45.010 B-Q2	1:43.918 B-R2	1:44.392 B-R2	+0.721 B-R2	105.1 B-R2	38.812 B-R2	38.266 B-R2	26.369 B-R2
76	Mazda Miata (1999)	Tyler Klein	SM	73	1:43.935 C-Q1	1:43.851	1:43.935 C-Q1	1:44.349 C-R2	1:45.643 C-R2	+16.895 C-R2	103.4 C-Q1	38.938 C-R2	38.417 C-Q2	26.496 C-Q1
77	Mazda Miata (1999)	Gianni Maiuro	SM	72	1:43.958 A-Q1	1:43.600	1:43.958 A-Q1	1:54.584 A-R2	1:55.060 A-R2	+3.013 A-R2	110.4 A-Q1, A-Q2	38.878 A-Q1	38.227 A-Q2	26.495 A-Q1
78	Mazda Miata (1999)	Max Hewitt	SM	22	1:44.032 C-R2	1:43.813	1:44.367 C-Q2	1:44.032 C-R2	1:45.172 C-R2	+19.041 C-R2	103.5 C-R2	38.880 C-Q2	38.333 C-R2	26.600 C-R2
79	Mazda Miata (2002)	Bob Mueller Jr	SM	60	1:44.035 A-Q1	1:43.763	1:44.035 A-Q1	1:55.642 A-R2	1:56.438 A-R2	+2.542 A-R2	110.2 A-Q1	39.152 A-Q1	38.173 A-Q1	26.438 A-Q1
80	Mazda Miata (2003)	Colin Murchison	SM	21	1:44.036 A-Q1	1:43.975	1:44.036 A-Q1	1:54.857 A-R2	1:55.200 A-R2	+2.051 A-R2	109.7 A-Q2	38.893 A-Q1	38.341 A-Q1	26.741 A-Q2
81	Mazda Miata (2001)	Tom Brown	SM	27	1:44.062 C-R2	1:43.968	1:44.113 C-Q1	1:44.062 C-R2	1:45.059 C-R2	+18.193 C-R2	103.8 C-R2	39.054 C-Q1	38.149 C-R2	26.765 C-Q2
82	Mazda Miata (1999)	Julian DaCosta	SM	78	1:44.079 D-Q2	1:44.079	1:44.079 D-Q2	1:45.289 D-R2	1:46.633 D-R2	+6.254 D-R2	110.3 D-R2	39.264 D-Q2	38.562 D-R1	26.698 D-Q2
83	Mazda Miata (1999)	Ben Gaunt	SM	95	1:44.098 A-Q1	1:43.768	1:44.098 A-Q1	1:54.883 A-R2	1:55.976 A-R2	+4.267 A-R2	108.7 A-Q1	38.909 A-Q1	38.184 A-Q1	26.675 A-Q2
84	Mazda Miata (1999)	Sean Varwig	SM	02	1:44.101 C-Q1	1:43.983	1:44.101 C-Q1				103.8 C-Q1	38.874 C-Q1	38.231 C-Q1	26.878 C-Q1
85	Mazda Miata (2001)	Ellie Gossett	SM	77, 177	1:44.102 A-Q1	1:43.995	1:44.102 A-Q1	1:46.956 B-R2	1:47.299 B-R2	+0.667 B-R2	109.5 A-Q1	39.063 A-Q1	38.250 A-Q1	26.682 A-Q1
86	Mazda Miata (2001)	Gavin Vaughan	SM	148	1:44.103 A-Q1	1:43.134	1:44.103 A-Q1	1:56.441 A-R2	2:00.065 A-R2	+4.984 A-R2	109.0 A-Q1	38.470 A-Q1	38.071 A-Q1	26.593 A-Q1
87	Mazda Miata (2002)	Weston Duchak	SM	68	1:44.130 C-Q2	1:43.751	1:44.130 C-Q2	1:44.546 C-R2	1:45.050 C-R2	+20.120 C-R2	102.2 C-R2	38.897 C-Q1	38.083 C-Q2	26.771 C-R2
88	Mazda Miata (1999)	Noah Harmon	SM	112	1:44.186 D-Q2	1:44.186	1:44.186 D-Q2	1:45.660 D-R2	1:46.094 D-R2	+3.483 D-R2	110.3 D-Q2, D-R2	39.694 D-R2	38.528 D-R2	26.717 D-Q2
89	Mazda Miata (1999)	Maximilian Opalski	SM	21	1:44.209 D-Q2	1:44.045	1:44.209 D-Q2	1:46.153 D-R2	1:47.031 D-R2	+6.430 D-R2	111.3 D-Q2	39.074 D-Q2	38.464 D-Q2	26.507 D-Q2
90	Mazda Miata (1999)	Chase Kovatch	SM	13	1:44.212 A-Q1	1:44.212	1:44.212 A-Q1	2:01.454 A-R2	2:07.653 A-R2	+3.926 A-R2	111.2 A-Q1	39.244 A-Q1	38.494 A-Q1	26.474 A-Q1
91	Mazda Miata (1999)	Casey Moseley	SM	92	1:44.232 A-Q1	1:43.982	1:44.232 A-Q1	1:54.440 A-R2	1:55.268 A-R2	+3.624 A-R2	110.0 A-Q1	39.099 A-Q1	38.132 A-Q1	26.751 A-Q1
92	Chevrolet Camaro Z-28 (2002)	Phillip Waters	AS	177	1:44.301 C-Q1	1:44.301	1:44.301 C-Q1	2:00.265 C-R1	2:08.610 C-R1	+11.503 C-R1	130.0 C-Q1	42.124 C-Q1	35.315 C-Q1	26.862 C-Q1
93	Mazda Miata (2001)	Miles Hewitt	SM	17	1:44.408 C-Q2	1:44.125	1:44.408 C-Q2	1:45.686 C-R2	1:46.319 C-R2	+18.637 C-R2	103.0 C-R2	39.131 C-Q2	38.412 C-Q2	26.582 C-Q2
94	Mazda Miata (2001)	Graham Jacobson	SM	6	1:44.569 A-Q1	1:44.340	1:44.569 A-Q1	1:55.632 A-R2	1:59.445 A-R2	+5.017 A-R2	109.0 A-R1	39.089 A-P	38.504 A-Q1	26.747 A-Q1
95	Mazda Miata (1999)	Greg Bogart	SM	123	1:44.596 A-Q1	1:44.389	1:44.596 A-Q1	1:56.701 A-R2	1:58.079 A-R2	+1.966 A-R2	108.4 A-Q1	39.359 A-Q1	38.337 A-Q1	26.693 A-Q1
96	Mazda Miata (1999)	Greg Sorg	SM	71	1:44.602 D-Q2	1:44.602	1:44.602 D-Q2	1:51.698 D-R2	1:52.745 D-R2	+2.676 D-R2	110.0 D-Q2	43.041 D-R2	40.155 D-R1	26.962 D-Q2
97	Mazda Miata (2021)	Jeremy Fletcher	SM	22	1:44.629 D-Q2	1:44.629	1:44.629 D-Q2	1:45.012 D-R2	1:46.483 D-R2	+6.893 D-R2	111.0 D-R2	39.933 D-R2	38.339 D-R2	26.715 D-Q2
98	Mazda Miata (1999)	Christopher Girem	SM	14	1:44.643 A-Q1	1:44.596	1:44.643 A-Q1	1:46.966 B-R2	1:47.206 B-R2	+0.561 B-R2	107.9 A-Q2	39.099 A-Q1	38.607 A-Q1	26.890 A-Q2
99	Mazda Miata (1999)	Javier Rodriguez	SM	189	1:44.743 B-Q1	1:44.440	1:44.743 B-Q1	2:22.040 B-R2			102.7 B-Q1	39.118 B-Q1	38.538 B-Q1	26.784 B-Q1
100	Mazda Miata (1999)	Marcos Vento	SM	12	1:44.778 D-Q2	1:44.579	1:44.778 D-Q2	1:52.736 D-R2	1:53.613 D-R2	+5.271 D-R2	109.5 D-R1	39.412 D-Q2	38.394 D-Q2	26.773 D-Q2
101	Mazda Miata (1999)	Henry Banks	SM	0	1:44.814 A-R1	1:44.277	1:45.060 A-Q1	1:44.814 A-R1	1:45.227 A-R1	+2.659 A-R1	109.0 A-R1	39.182 A-R1	38.512 A-R1	26.583 A-R1
102	Mazda Miata (1999)	Mike Ryan	SM	120	1:44.886 C-Q1	1:44.823	1:44.886 C-Q1	1:46.343 C-R2	1:53.976 C-R2	+26.758 C-R2	103.2 C-Q1	39.385 C-Q1	38.372 C-Q1	27.066 B-P
103	Mazda miata 1800 (1999)	Niko Fondrini	SM	151	1:44.919 C-Q1	1:44.576	1:44.919 C-Q1	1:45.123 C-R2	1:45.952 C-R2	+19.862 C-R2	103.0 C-Q1	39.163 C-R2	38.517 C-Q1	26.896 C-Q1
104	Mazda Miata (1999)	Jordan Rick Segrini	SM	108	1:44.976 D-Q2	1:44.510	1:44.976 D-Q2	1:47.046 D-R2	1:48.256 D-R2	+4.151 D-R2	109.5 D-Q1	39.023 D-Q2	38.544 D-Q2	26.943 D-Q2
105	Mazda Miata (2007)	Anthony Geraci	SM	8	1:45.028 D-Q2	1:45.028	1:45.028 D-Q2	1:48.497 D-R2	1:50.034 D-R2	+4.184 D-R2	110.7 D-Q2	41.598 D-R2	39.226 D-R2	26.855 D-Q2
106	Mazda Miata	Jay Thomas	SM	70	1:45.049 A-Q2	1:44.765	1:45.049 A-Q2	1:46.218 A-R1	1:47.460 A-R1	+3.843 A-R1	109.7 A-R1	39.288 A-R1	38.617 A-R1	26.860 A-Q2
107	Mazda Miata (2002)	Jason Fichter	SM	7	1:45.116 C-R2	1:44.882	1:46.150 C-Q2	1:45.116 C-R2	1:45.946 C-R2	+19.298 C-R2	101.9 C-R2	39.386 C-R2	38.482 C-R2	27.014 C-R2
108	Mazda Miata 0	John Hamner 2+ cars	SM	7	1:45.268 A-Q1	1:44.822	1:45.268 A-Q1	1:56.946 A-R2	1:58.061 A-R2	+3.173 A-R2	109.1 A-Q1	39.469 A-Q1	38.548 A-Q1	26.805 A-Q2
109	Mazda Miata (1999)	Logan Cozzie	SM	96	1:45.523 D-Q2	1:45.523	1:45.523 D-Q2	1:49.752 D-R2	1:50.512 D-R2	+3.531 D-R2	109.4 D-Q2	41.310 D-R1	39.551 D-R1	27.079 D-Q2
110	Mazda Miata	Mark Weber 2+ cars	FP	25	1:45.523 D-Q2	1:45.393	1:45.523 D-Q2	1:58.872 D-R2	1:59.330 D-R2	+2.724 D-R2	122.4 D-Q2	41.775 D-Q2	36.395 D-Q2	27.223 D-Q2
111	Mazda Miata (2003)	Steven Clemons JR	SM	75	1:45.537 D-Q2	1:45.537	1:45.537 D-Q2	1:48.900 D-R2	1:49.356 D-R2	+4.182 D-R2	108.7 D-Q2	40.747 D-R2	39.205 D-R1	27.057 D-Q2
112	Mazda Miata (1999)	Justin Ferraro	SM	8	1:45.546 A-Q1	1:45.546	1:45.546 A-Q1				109.8 A-Q1	39.647 A-Q1	38.710 A-Q1	27.189 A-Q1
113	Mazda Miata (2002)	Jillian Fichter	SM	12	1:45.611 C-Q1	1:44.993	1:45.611 C-Q1	1:46.338 C-R2	1:47.089 C-R2	+15.725 C-R2	103.6 C-R2	39.331 C-R2	38.503 C-R2	27.159 C-Q1
114	Mazda Miata (2000)	Riley Haig	SM	05	1:45.614 A-Q1	1:45.544	1:45.614 A-Q1	1:59.410 A-R2	2:01.516 A-R2	+5.340 A-R2	109.1 A-Q1	39.758 A-Q1	38.724 A-Q1	27.062 A-Q1
115	Mazda Miata (1999)	Cohen Craft	SM	74	1:45.707 A-Q1	1:45.444	1:45.707 A-Q1	1:56.152 A-R2	1:56.546 A-R2	+2.291 A-R2	109.4 A-Q2	39.387 A-Q1	38.931 A-Q2	27.126 A-Q1
116	Mazda Miata (1999)	Lucas Jensen 2+ cars	SM	55, 56	1:45.717 A-Q2	1:45.429	1:45.717 A-Q2	1:56.783 A-R2	1:57.481 A-R2	+2.094 A-R2	108.0 A-Q2	39.446 A-R1	39.132 A-Q2	26.851 A-Q2
117	Mazda Miata (2003)	Jesse Singer	SM	192	1:45.796 C-Q2	1:45.240	1:45.796 C-Q2	1:47.177 D-R2	1:47.763 D-R2	+4.409 D-R2	109.1 D-Q2	39.519 C-Q2	38.695 C-Q1	27.026 D-Q2
118	Mazda Miata (1999)	Tal Tsfany	SM	10, 22	1:45.846 A-Q1	1:45.846	1:45.846 A-Q1	1:59.066 A-R2	1:59.855 A-R2	+1.921 A-R2	108.2 A-Q1	39.862 A-Q1	38.926 A-Q1	27.058 A-Q1
119	Mazda Miata (2004)	Domenico Leuci	SM	46	1:45.932 D-Q2	1:45.863	1:45.932 D-Q2	1:50.426 D-R2	1:52.009 D-R2	+8.236 D-R2	107.9 D-R1	39.687 D-Q2	39.000 D-Q2	27.176 D-Q2
120	Mazda Miata (1999)	Grant Janish	SM	178	1:45.986 D-Q2	1:45.986	1:45.986 D-Q2	1:49.890 D-R2	1:52.562 D-R2	+7.241 D-R2	108.8 D-R2	42.385 D-R2	39.407 D-R2	27.057 D-Q2
121	Mazda Miata (1999)	Brian Tone	SM	155	1:46.056 C-Q1	1:45.357	1:46.056 C-Q1	1:46.089 C-R2	1:46.893 C-R2	+12.548 C-R2	102.3 C-R2	39.339 C-Q1	38.853 C-Q2	27.165 C-R2
122	Mazda Miata (1999)	Hayden Manis	SM	88	1:46.149 C-Q1	1:44.212	1:46.149 C-Q1	1:46.279 C-R2	1:47.717 C-R2	+13.621 C-R2	103.0 C-R2	38.813 C-R2	38.565 C-R2	26.834 C-R2
123	Mazda Miata (1999)	Robert Garrison 2+ cars	SM	06	1:46.158 A-Q1	1:45.996	1:46.158 A-Q1	1:57.475 A-R2	1:58.199 A-R2	+3.791 A-R2	108.2 A-Q1	40.157 A-Q1	38.699 A-Q1	27.140 A-Q1
124	Mazda Miata (1999)	Mickey Moran	SM	25	1:46.260 D-Q2	1:45.816	1:46.260 D-Q2	1:50.907 D-R2	1:52.340 D-R2	+6.599 D-R2	109.6 D-Q2	39.865 D-Q2	39.044 D-Q2	26.907 D-Q2
125	Mazda Miata (1999)	Max Schweid	SM	91	1:46.271 D-Q2	1:46.271	1:46.271 D-Q2	1:49.347 D-R2	1:50.823 D-R2	+8.695 D-R2	108.5 D-R1	41.758 D-R2	39.716 D-R2	27.413 D-Q2
126	Mazda Miata (2003)	Thomas Paolino	SM	34	1:46.298 D-Q2	1:46.298	1:46.298 D-Q2	1:50.173 D-R2	1:51.386 D-R2	+5.082 D-R2	108.8 D-R1	42.002 D-R2	39.880 D-R1	27.147 D-Q2
127	Mazda Mx5 nb miata (1999)	Lucas Jensen 2+ cars	SM	56	1:46.413 B-R2	1:45.898	1:47.532 B-Q1	1:46.413 B-R2	1:47.195 B-R2	+1.316 B-R2	103.5 B-R2	39.877 B-R2	38.801 B-R2	27.220 B-R2
128	Mazda Miata (1999)	Randall Joe	SM	65	1:46.461 B-Q1	1:45.884	1:46.461 B-Q1	1:46.502 A-R1	1:47.588 B-R2	+1.251 B-R2	108.8 D-Q1	39.996 A-R1	38.690 C-Q1	27.198 B-Q1
129	Mazda Miata (2001)	Rob Trollinger	SM	94	1:46.653 D-Q2	1:46.653	1:46.653 D-Q2	1:58.758 D-R2	1:59.525 D-R2	+3.255 D-R2	107.1 D-Q2	45.976 D-R2	40.668 D-R1	27.356 D-Q2
130	Mazda Miata (1999)	Laurin Brallier	SM	76	1:46.778 D-Q2		1:46.778 D-Q2				107.6 D-Q1			27.620 D-Q2
131	Mazda Miata (1999)	Ben Foltz	SM	5	1:46.900 A-R1	1:46.512	1:47.918 A-Q2	1:46.900 A-R1	1:47.586 A-R1	+1.947 A-R1	109.7 A-R1	40.337 A-R1	38.951 A-R1	27.224 A-R1
132	Mazda SM Miata (1999)	Ryan Peterman	SM	53	1:46.947 B-R2	1:46.435	1:48.292 B-Q2	1:46.947 B-R2	1:48.277 B-R2	+2.185 B-R2	102.6 B-R2	40.139 B-R2	38.963 B-R2	27.333 B-R2
133	Mazda Miata	John Hamner 2+ cars	SM	07	1:47.109 A-P	1:46.643					104.0 A-P	40.521 A-P	39.152 A-P	26.970 A-P
134	Mazda Miata (2001)	Chris Rawlings	SM	35	1:47.139 A-P	1:46.945					102.5 A-P	39.904 A-P	39.346 A-P	27.695 A-P
135	Mazda Miata (1994)	Mark Zwolle	SM	154	1:47.151 C-R2	1:46.892	1:47.434 C-Q1	1:47.151 C-R2	1:48.302 C-R2	+15.060 C-R2	103.4 C-Q1	40.543 C-Q1	38.928 C-Q1	27.421 C-R2
136	Mazda Miata (1999)	Aaron Parkinson	SM	111	1:47.193 D-Q2	1:46.776	1:47.193 D-Q2	1:50.508 D-R2	1:52.079 D-R2	+6.689 D-R2	109.6 D-Q2	40.426 D-Q2	39.185 D-Q2	27.165 D-Q2
137	Mazda Miata (1999)	William Keeling	SM	11	1:47.254 D-Q2	1:46.788	1:47.254 D-Q2	1:48.070 D-R1	1:49.042 D-R1	+5.577 D-R1	107.7 D-Q2	39.965 D-Q2	39.269 D-R1	27.554 D-Q2
138	Mazda Miata	David Henderson	SM	28	1:47.385 D-Q2	1:47.385	1:47.385 D-Q2	1:49.282 D-R2	1:50.736 D-R2	+7.728 D-R2	109.1 D-R2	41.964 D-R2	39.278 D-R2	27.507 D-Q2
139	Mazda Miata (1999)	Chris Clarke	SM	109	1:47.775 D-Q2	1:47.775	1:47.775 D-Q2	1:49.216 D-R2	1:50.519 D-R2	+7.517 D-R2	109.9 D-R2	41.948 D-R2	39.594 D-R2	27.399 D-Q2
140	Mazda Miata (2001)	Steve Sturm	SM	90	1:48.079 D-Q2	1:47.906	1:48.079 D-Q2	1:48.359 D-R1	1:48.899 D-R1	+4.377 D-R1	108.0 D-R1	40.805 D-Q2	39.205 D-Q2	27.896 D-R1
141	Mazda Miiat	Alex Rubenstein	SM	94	1:48.132 A-Q2	1:48.132	1:48.132 A-Q2	2:04.082 A-R2	2:05.052 A-R2	+3.348 A-R2	107.0 A-Q2	40.813 A-Q2	39.712 A-Q2	27.607 A-Q2
142	Mazda Miata (1999)	Warren Sackman	SM	76	1:48.397 B-P	1:47.853	1:48.681 B-Q1	1:52.633 B-R2	1:53.520 B-R2	+2.812 B-R2	103.4 B-R1	40.796 B-P	39.400 B-Q1	27.657 B-Q1
143	Mazda Miata (1999)	Gavin Wardel	SM	194	1:48.439 B-R2	1:48.290	1:52.795 B-Q2	1:48.439 B-R2	1:50.527 B-R2	+2.484 B-R2	103.4 B-R2	40.760 B-R2	39.873 B-R2	27.657 B-R2
144	Mazda Miata (1999)	Alfred Wingo	SM	108	1:48.549 B-Q1	1:48.138	1:48.549 B-Q1	1:48.853 B-R2	1:49.234 B-R2	+1.852 B-R2	104.2 B-R1	41.471 B-R2	39.416 B-R2	27.251 B-Q1
145	Mazda Miata (1999)	Jason Greenwood	SM	100	1:48.679 D-R1	1:48.679	1:51.015 D-Q2	1:48.679 D-R1	1:49.618 D-R1	+7.053 D-R1	106.2 D-Q2	41.162 D-R1	39.930 D-R1	27.587 D-R1
146	Mazda Miata (1999)	Bruce Allen	SM	43	1:49.309 C-R2	1:48.918	1:50.500 C-Q2	1:49.309 C-R2	1:50.392 C-R2	+21.271 C-R2	100.2 C-Q1	41.391 C-R2	39.541 C-R2	27.986 C-R2
147	Mazda Miata (1991)	Bailey Sigler	SM	59	1:49.963 D-Q2	1:48.968	1:49.963 D-Q2	1:50.602 D-R2	1:52.130 D-R2	+10.120 D-R2	108.1 D-R1	41.200 D-Q2	39.938 D-Q2	27.830 D-R2
148	Mazda Miata (1992)	Brad Williams	SM	17	1:50.296 D-Q2	1:50.296	1:50.296 D-Q2	1:57.449 D-R1	1:58.430 D-R1	+2.940 D-R1	105.5 D-Q1	42.258 D-Q2	40.085 D-Q2	27.953 D-Q2
149	Mazda Miata	Gregg Seigart	FP	48	1:50.884 D-Q2	1:50.652	1:50.884 D-Q2	1:59.629 D-R2	2:00.941 D-R2	+2.699 D-R2	109.4 D-Q2	43.023 D-Q2	39.471 D-Q2	28.158 D-Q2
150	Mazda Miata	Brayton Williams	SM	04	1:53.547 A-Q1	1:52.243	1:53.547 A-Q1	2:06.066 A-R2	2:25.874 A-R2	+2.774 A-R2	100.5 A-Q1	42.472 A-R1	41.129 A-Q1	28.642 A-Q1
151	Fiat 124 Spider (1974)	Douglas Sanders >115%	FP	10	2:08.730 C-R2	2:07.979		2:08.730 C-R2	2:12.245 C-R2	+3.936 C-R2	91.2 C-R2	50.604 C-R2	42.988 C-R2	34.387 C-R2

About this data

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. The columns are about the car: its best lap, the lap its best sectors add up to, its sector times and trap speed. "Driver metrics" adds two about the driver: the best 5-lap stint (mean of the quickest five consecutive race laps) and consistency (how far the median race lap sat behind the best in that race; small is a driver who does it every lap), both from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
Ford Mustang GT	AS	4	1:34.642Michael Kamalian	1:35.467Thomas J Ellis	1:34.642Michael Kamalian	140.9Michael Kamalian	37.067Michael Kamalian	32.639Thomas J Ellis	24.028Michael Kamalian
Ford Mustang	AS	1	1:34.642Michael Kamalian	1:36.558Michael Kamalian	1:34.642Michael Kamalian	140.9Michael Kamalian	37.067Michael Kamalian	33.474Michael Kamalian	24.028Michael Kamalian
Ford Mustang (2003)	AS	1	1:35.351Thomas J Ellis	1:35.467Thomas J Ellis	1:35.351Thomas J Ellis	138.3Thomas J Ellis	37.678Thomas J Ellis	32.639Thomas J Ellis	24.384Thomas J Ellis
Ford Mustang (2006)	AS	1	1:35.692Gregory Eaton	1:36.767Gregory Eaton	1:35.692Gregory Eaton	132.5Gregory Eaton	37.336Gregory Eaton	33.408Gregory Eaton	24.551Gregory Eaton
Ford Mustang GT (2008)	AS	1	1:36.389James Jost	1:38.195James Jost	1:36.389James Jost	138.6James Jost	38.069James Jost	32.794James Jost	24.669James Jost
Acura Integra	FP	2	1:37.623Ken Kannard	1:37.924Ken Kannard	1:37.623Ken Kannard	122.9Ken Kannard	37.585Ken Kannard	0.792Ken Kannard	24.740Ken Kannard
Mazda Miata	FP/SM	128	1:38.226Mason Workman	1:38.226Mason Workman	1:38.805Mason Workman	122.4Mark Weber	37.238Mason Workman	0.778Stephen Simonds	25.160Mason Workman
Mazda Miata (1992)	FP	2	1:38.226Mason Workman	1:38.226Mason Workman	1:38.805Mason Workman	120.2Mason Workman	37.238Mason Workman	35.576Mason Workman	25.160Mason Workman
Mazda MIata	FP	1	1:40.329Steven Powers	1:40.329Steven Powers	1:48.283Steven Powers	118.4Steven Powers	38.142Steven Powers	36.400Steven Powers	25.684Steven Powers
Mazda Miata (1990)	FP	1	1:40.560Stephen Simonds	1:40.686Stephen Simonds	1:40.560Stephen Simonds	113.4Stephen Simonds	38.314Stephen Simonds	0.778Stephen Simonds	25.592Stephen Simonds
Mazda Miata	FP/SM	8	1:41.644Robert Garrison	1:41.644Robert Garrison	1:42.681Perry Simonds	122.4Mark Weber	38.892Robert Garrison	36.374Perry Simonds	25.814Perry Simonds
Mazda Miata (2001)	SM	16	1:42.071Stanley Brock Jr	1:42.324Mike Cottrell	1:43.062Mike Cottrell	111.8Stanley Brock Jr	38.166Stanley Brock Jr	0.806Mike Cottrell	25.854Mike Cottrell
Mazda Miata (1999)	SM	42	1:42.453John Salerno	1:42.453John Salerno	1:42.803Travis Wiley	111.8Travis Wiley	38.390Travis Wiley	37.750John Salerno	26.162Dean Dybdahl
Mazda Miata (2003)	SM	6	1:42.619Charles Mactutus	1:42.619Charles Mactutus	1:42.995Charles Mactutus	110.9Charles Mactutus	38.190Charles Mactutus	37.772Charles Mactutus	26.225Charles Mactutus
Mazda Miata (1999)	SM	19	1:42.625Sean Noonan	1:42.848Sean Noonan	1:42.625Sean Noonan	111.0Nick Leverone	38.381Andrew Devoto	37.768Sean Noonan	26.162Elivan Goulart
Mazda Miata (2002)	SM	2	1:42.684Logan Stretch	1:42.684Logan Stretch	1:43.065Logan Stretch	111.6Logan Stretch	38.418Logan Stretch	37.868Logan Stretch	26.307Logan Stretch
Mazda Miata (2000)	SM	2	1:42.741James Newell	1:42.741James Newell	1:52.988James Newell	112.2James Newell	38.581James Newell	37.797James Newell	26.316James Newell
Mazda Miata (2005)	SM	1	1:43.034Jim Drago	1:43.034Jim Drago	1:43.345Jim Drago	111.6Jim Drago	38.583Jim Drago	37.940Jim Drago	26.304Jim Drago
Mazda Miata (2002)	SM	6	1:43.126Jose Ulfe	1:43.156Nicholas Bruni	1:43.126Jose Ulfe	111.3Nicholas Bruni	38.282Nicholas Bruni	37.779Jose Ulfe	26.300Jose Ulfe
Mazda Miata (2000)	SM	1	1:43.170Tyler Brown	1:43.696Tyler Brown	1:43.170Tyler Brown	105.2Tyler Brown	38.475Tyler Brown	37.828Tyler Brown	26.620Tyler Brown
Mazda miata	SM	1	1:43.270Daniel Williams	1:43.270Daniel Williams	1:43.466Daniel Williams	105.9Daniel Williams	38.703Daniel Williams	37.954Daniel Williams	26.378Daniel Williams
Mazda Miata (2001)	SM	5	1:43.273Brandon Collins	1:43.584Brandon Collins	1:43.273Brandon Collins	106.2Justin Gravett	38.330Brandon Collins	37.918Brandon Collins	26.397Justin Gravett
Mazda Miata (2004)	SM	3	1:43.360Francisco BArroso	1:43.360Francisco BArroso	1:44.528Francisco BArroso	111.6Francisco BArroso	38.680Spencer Lofton	37.969Francisco BArroso	26.394Francisco BArroso
Mazda Miata (1991)	SM	2	1:43.366David Stern	1:43.366David Stern	1:50.602Bailey Sigler	110.9David Stern	38.849David Stern	37.936David Stern	26.571David Stern
Mazda Miata (2005)	SM	1	1:43.367Senter Smith	1:43.946Senter Smith	1:43.367Senter Smith	103.8Senter Smith	38.557Senter Smith	37.910Senter Smith	26.681Senter Smith
Mazda Miata (1997)	SM	2	1:43.449Cliff Brown	1:43.449Cliff Brown	1:46.870Cliff Brown	110.8Cliff Brown	38.835Cliff Brown	37.968Marc Cefalo	26.425Cliff Brown
Mazda Mazda Miata (2000)	SM	1	1:43.494Max Ehrlich	1:44.097Max Ehrlich	1:43.494Max Ehrlich	104.0Max Ehrlich	38.721Max Ehrlich	38.076Max Ehrlich	26.545Max Ehrlich
Mazda Miata (1994)	SM	1	1:43.760Chris Allen	1:43.760Chris Allen	1:53.628Chris Allen	111.5Chris Allen	39.115Chris Allen	38.070Chris Allen	26.280Chris Allen
Mazda Miata (2003)	SM	3	1:43.771Scott Carlisle	1:44.382Joseph Federl	1:43.771Scott Carlisle	109.1Jesse Singer	38.791Joseph Federl	38.150Scott Carlisle	26.386Joseph Federl
Mazda Miata (2021)	SM	1	1:44.629Jeremy Fletcher	1:44.629Jeremy Fletcher	1:45.012Jeremy Fletcher	111.0Jeremy Fletcher	39.933Jeremy Fletcher	38.339Jeremy Fletcher	26.715Jeremy Fletcher
Mazda Miata (2007)	SM	1	1:45.028Anthony Geraci	1:45.028Anthony Geraci	1:48.497Anthony Geraci	110.7Anthony Geraci	41.598Anthony Geraci	39.226Anthony Geraci	26.855Anthony Geraci
Mazda Miata (1994)	SM	1	1:47.151Mark Zwolle	1:47.434Mark Zwolle	1:47.151Mark Zwolle	103.4Mark Zwolle	40.543Mark Zwolle	38.928Mark Zwolle	27.421Mark Zwolle
Mazda Miata (1992)	SM	1	1:50.296Brad Williams	1:50.296Brad Williams	1:57.449Brad Williams	105.5Brad Williams	42.258Brad Williams	40.085Brad Williams	27.953Brad Williams
Honda CRX	FP	1	1:38.576Chris Bovis	1:38.576Chris Bovis	1:38.655Chris Bovis	117.3Chris Bovis	37.788Chris Bovis	35.332Chris Bovis	24.941Chris Bovis
BMW 325es	FP	1	1:38.885Matt Reppert	1:38.885Matt Reppert	1:38.946Matt Reppert	122.1Matt Reppert	37.730Matt Reppert	35.717Matt Reppert	25.209Matt Reppert
Honda Civic Del Sol VTEC	FP	1	1:39.502Cliff Ira	1:39.502Cliff Ira	1:48.427Cliff Ira	123.3Cliff Ira	38.104Cliff Ira	35.234Cliff Ira	25.476Cliff Ira
Mazda Miata - FP	FP	1	1:41.786Mark Weber	1:41.786Mark Weber	1:42.215Mark Weber	114.0Mark Weber	39.042Mark Weber	36.275Mark Weber	26.155Mark Weber
Mazda Miata VVTR	SM	1	1:42.620Danny Steyn	1:42.620Danny Steyn	1:43.008Danny Steyn	104.6Danny Steyn	38.352Danny Steyn	37.827Danny Steyn	26.317Danny Steyn
Mazda Miati	SM	2	1:43.071James Newell	1:43.071James Newell	1:43.331James Newell	106.0Matthew Novak	38.453James Newell	37.907James Newell	26.356James Newell
Mazda Miati (2000)	SM	1	1:43.071James Newell	1:43.071James Newell	1:43.331James Newell	105.9James Newell	38.453James Newell	37.907James Newell	26.356James Newell
Mazda Miati (1999)	SM	1	1:43.380Matthew Novak	1:44.142Matthew Novak	1:43.380Matthew Novak	106.0Matthew Novak	38.691Matthew Novak	37.920Matthew Novak	26.425Matthew Novak
Mazda Mx5 nb miata	SM	3	1:43.195Jarrett Jones	1:43.614Jarrett Jones	1:43.195Jarrett Jones	106.2Jarrett Jones	38.663Jarrett Jones	37.764Jarrett Jones	26.402Jarrett Jones
Mazda Miata MX-5 (2002)	SM	1	1:43.195Jarrett Jones	1:43.614Jarrett Jones	1:43.195Jarrett Jones	106.2Jarrett Jones	38.663Jarrett Jones	37.764Jarrett Jones	26.402Jarrett Jones
Mazda miata 1800 (1999)	SM	1	1:44.919Niko Fondrini	1:44.919Niko Fondrini	1:45.123Niko Fondrini	103.0Niko Fondrini	39.163Niko Fondrini	38.517Niko Fondrini	26.896Niko Fondrini
Mazda Mx5 nb miata (1999)	SM	1	1:46.413Lucas Jensen	1:47.532Lucas Jensen	1:46.413Lucas Jensen	103.5Lucas Jensen	39.877Lucas Jensen	38.801Lucas Jensen	27.220Lucas Jensen
Chevrolet Camaro Z-28	AS	1	1:44.301Phillip Waters	1:44.301Phillip Waters	2:00.265Phillip Waters	130.0Phillip Waters	42.124Phillip Waters	35.315Phillip Waters	26.862Phillip Waters
Mazda Miata 0	SM	1	1:45.268John Hamner	1:45.268John Hamner	1:56.946John Hamner	109.1John Hamner	39.469John Hamner	38.548John Hamner	26.805John Hamner
Mazda SM Miata	SM	1	1:46.947Ryan Peterman	1:48.292Ryan Peterman	1:46.947Ryan Peterman	102.6Ryan Peterman	40.139Ryan Peterman	38.963Ryan Peterman	27.333Ryan Peterman
Mazda Miiat	SM	1	1:48.132Alex Rubenstein	1:48.132Alex Rubenstein	2:04.082Alex Rubenstein	107.0Alex Rubenstein	40.813Alex Rubenstein	39.712Alex Rubenstein	27.607Alex Rubenstein
Fiat 124 Spider	FP	1	2:08.730Douglas Sanders		2:08.730Douglas Sanders	91.2Douglas Sanders	50.604Douglas Sanders	42.988Douglas Sanders	34.387Douglas Sanders

About this data

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Super Tour Mar 2023 → Super Tour Mar 2024 2023-03-10 to 2024-03-08

2023-05-01 FP Classification Request for 1978 Toyota Celica

#34097 from Bob Pharr · Rule change · TB 23-05 (2023-05 Fastrack)

addedToyota Celica 78-80 classified FP Prep level 2, 2100–2205 lbs, 2190 cc SOHC four-cylinder, stock carburetion, 11.0:1 compression limit, .450" valve lift limit.

As printed in Fastrack

In FP Spec Lines, classify Toyota Celica (78-80) as follows:

A specification table follows in the original; it is not shown here.

2023-06-01 FP Request to Classify Sonic and Fiesta in HP

#34264 from Greg Amy · Rule change · TB 23-06 (2023-05 Fastrack)

addedFord Fiesta HP model years change to 11-19; Chevrolet Sonic FP model years change to 12-19.

As printed in Fastrack

In HP, adjust model years of the "Ford Fiesta (11-16)" spec line as follows:
"Ford Fiesta (11-16 9)"
In FP, adjust model years of the "Chevrolet Sonic (12-16)" spec line as follows:
"Chevrolet Sonic (12-16 9)"

2023-07-01 FP ITC to FP?

#34286 from David Snow · Rule change · TB 23-06 (2023-07 Fastrack)

removed · cars addedHP Volkswagen Rabbit Cabriolet 1780 removed; Rabbit 1588 and 1715 reclassified with year and body-type clarifications.

As printed in Fastrack

In HP Spec Lines, Volkswagen Rabbit Cabriolet 1780, delete in its entirely:
In HP, Spec Lines, Volkswagen Rabbit, change Title as follows:
“Volkswagen Rabbit 1588 ~~(includes Cabriolet / convertible)~~”
“Volkswagen Rabbit 1715 ~~(81-84) (excl. conv.)~~”
“Volkswagen Rabbit ~~GTI~~ 1780 ~~(83-84)~~”

2023-07-01 FP Correct Intake Valve Size on 1500cc Midget/Spitfire

#34419 from Production Committee · Rule change · TB 23-06 (2023-05 Fastrack)

wordingFP and HP Sprite and Spitfire 1500 intake valve size corrected to 36.6 mm, removing prior decimal specifications.

As printed in Fastrack

In FP Spec Lines, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.3~~/(1.44)"
In FP Spec Lines, Triumph Spitfire Mk. IV & 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"
In HP Spec Lines, Triumph Spitfire 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"
In HP Spec Lines, Triumph Spitfire Mk. III & IV 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"

2023-08-01 AS Crate Motor Part Numbers

#32944 from Sam Daniels · Rule change · TB 23-08 (2023-08 Fastrack)

wordingAS crate motor part number specification clarified; both CT400 P/N-19370604 and 19370604 engine assemblies permitted for GM vehicles.

As printed in Fastrack

In AS, GCR Section 9.1.6.F.2., change as follows:
"GM Performance parts CT400 P/N-1937 → 0604 or 1937 → 0604 engine assembly for GM produced vehicles."

2023-08-01 AS Request wheel size change

#33007 from Michael Kamalian · Rule change · TB 23-08 (2023-08 Fastrack)

faster · tyres & wheelsAS Ford Mustang GT 5.0L (15-17) Restricted maximum wheel diameter increases to 19.0 inches.

As printed in Fastrack

In AS Spec Lines, Ford Mustang GT 5.0l (15-17) Restricted Preparation, change Notes as follows:
"Max. Wheel Size: Dia.~~18.0~~ 19.0 inches."

Applies to Ford Mustang GT on this page: Michael Kamalian

2023-08-01 AS Alternative Upper Front Control Arms for Dodge Challenger

#33352 from Clark Cambern · Rule change · TB 23-08 (2023-08 Fastrack)

wordingAS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front upper control arms; SPC-66045 spec part removed.

As printed in Fastrack

In AS SPEC Lines, Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2
valves/cylinder, change Notes as follows:
"~~SPC-66045~~ Alternate front upper control arms are permitted."

2023-08-01 AS Front Brake Caliper Adapters for Dodge Challenger

#33353 from Clark Cambern · Rule change · TB 23-08 (2023-08 Fastrack)

otherAS Dodge Challenger 5.7L/6.1L/6.4L V8 now allows alternate front brake calipers with adaptor brackets for component compatibility.

As printed in Fastrack

In AS SPEC Lines, Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2
valves/cylinder, change Notes as follows:
"Stock brakes or alternate Dodge brakes (Part numbers: front caliper (0517 → 5106 (R) and 0517 → 5107 (L); rear caliper (R1542564 (R)
and R1542565 (L))) may be used with the brake rotor sizes listed in this specification line. Alternate brackets may be used to
facilitate updated/backdated components."

2023-12-01 FP Porsche 944/924S Rule Change Request

#35002 from Adam Achepohl · Rule change · TB 23-12 (2023-12 Fastrack)

slower · weightEP Porsche 944/924S combines 2.5L and 2.7L variants (83-89), raises weight to 2250–2415 lbs, allows 2681cc displacement.

As printed in Fastrack

In EP Spec Lines, delete the Porsche 944/924S 2.5L (2V) (83-88) spec line entirely, and create a new spec line for Porsche
944/924S 2.5L(2V) 2.7L(2V) (83-89) as follows:

A specification table follows in the original; it is not shown here.

2023-12-01 FP FP and HP Toyota Corolla

#35030 from Keith Church · Rule change · TB 23-12 (2023-12 Fastrack)

faster · weightFP Toyota Corolla 2TC loses 43 lbs to 1810; HP Corolla loses 50–52 lbs to 1910–2006.

As printed in Fastrack

In FP Spec Lines, Toyota Corolla 2TC (71-74), change weight as follows:
"~~1853~~ 1810"
In HP Spec Lines, Toyota Corolla (71-74), change weight as follows:
“~~1960~~ 1910
* ~~2009~~ 1958
** ~~2058~~ 2006”

2023-12-01 FP Triumph GT6 Adjustments

#35054 from ANTHONY PARKER · Rule change · TB 23-12 (2023-12 Fastrack)

faster · weightEP Triumph GT6 minimum weight drops to 1800 lbs.

As printed in Fastrack

In EP Spec Lines, Triumph GT6, change weight as follows:
"~~1830~~ 1800"

2024-01-01 FP FP data

#35060 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

In FP Spec Line, Acura Integra LS (94-01), change weight as follows:
"~~2235~~ 2260
*~~2291~~ 2317
**~~2347~~ 2373"
In FP Spec Line, Honda Del Sol VTEC (94-97), change weight as follows:
"~~2190~~ 2265
*~~2245~~ 2322
**~~2300~~ 2378"

Applies to Acura Integra on this page: Ken Kannard, Les Chaney

Applies to Honda Civic Del Sol VTEC on this page: Cliff Ira

2024-01-01 FP Request to Review Z3 2.5 Spec Line

#35073 from Tim Schreyer · Rule change · TB 24-01 (2024-01 Fastrack)

slower · weightEP BMW Z3 2.5L minimum weight increased to 2500 lbs, 2563 lbs with power adder, 2625 lbs with two power adders.

As printed in Fastrack

In EP spec line, BMW Z3 2.5L, change weight as follows:
"~~2450~~ 2500
*~~2511~~ 2563
**~~2573~~ 2625"

2024-01-01 FP Corrections to Honda Spec Lines in FP

#35250 from Jonathan Spiegel · Rule change · TB 24-01 (2024-01 Fastrack)

unclearFP Honda throttle body inside diameters corrected across seven models: Civic 1.5 to 42", Civic Si to 55", CRX 1.5 to 42", CRX 84-87 to 33/42", CRX Si 88-91 to 55".

As printed in Fastrack

In FP Spec Lines, change Fuel Injected Equipped Throttle Body Inside Diameter as follows:
Acura Integra GSR (92-93): "58"
Honda Civic 1.5 (88-91): "NA 42"
Honda Civic EX (90-91): "55"
Honda Civic Si (88-91): “42 55”
Honda CRX 1.5 (88-91): “~~33 (primary) 42 (secondary)~~ 42”
Honda CRX / CRX Si (84-87): ”42 33 (primary) 42 (secondary)”
Honda CRX Si (88-91): ”NA 55”

2024-01-01 FP Miata Alternate Head

#35253 from Don Tucker · Rule change · TB 24-01 (2024-01 Fastrack)

faster · weightEP Mazda MX-5 1.8L (90-97) minimum weight cut to 2150 lbs; (94-97) variants to 2000, 2050, 2100 lbs.

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 /Miata 1.8L (90-97), change weight as follows:
"~~2200~~ 2150"
Mazda MX-5 /Miata (94-97)
"~~2035~~ 2000
*~~2086~~ 2050
**~~2137~~ 2100"

2024-01-01 FP Triumph GT6 Adjustments

#35255 from Anthony Parker · Rule change · TB 24-01 (2024-01 Fastrack)

slower · weightEP Triumph GT6 dual 1.75-inch carburetors weight rises to 1940 lbs; triple Weber 40 DCOE option added at 1990 lbs.

As printed in Fastrack

In EP spec line, Triumph GT6, make the following change in the Notes section:
"Two (2) 1.75” auto-type carburetors @ 1970 40 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990
lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive. ~~Three (3) Weber 40mm DCOE w/28mm venturi on individual~~
~~runner manifold @ 2020 lb.~~"

2024-01-01 FP Honda S2000 throttle body

#35272 from Aaron Johnson · Rule change · TB 24-01 (2024-01 Fastrack)

faster · inductionEP Honda S2000 fuel injected throttle body inside diameter increases from 62mm to 64mm.

As printed in Fastrack

In EP spec line, Honda S2000, make the following changes to its spec line:
Fuel Injected Equipped Throttle Body Inside Diameter: "62 64"
Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .500”. An adaptor plate can be used to mount the 62mm throttle body
from '00-05 to the '06-09 intake manifold. The adaptor plate can be no more than 1.25" thick, and its bore must not exceed the
"Fuel Injected Equipped Throttle Body Inside Diameter" maximum spec of 64mm."

2024-01-01 FP Correction within Triumph TR8 Spec Line

#35315 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

wordingEP Triumph TR8 dry sump allowance moved from Carburetor line to Notes.

As printed in Fastrack

In EP spec line, Triumph TR8 (78-81), move the "Dry sump allowed" wording to the appropriate location as follows:
Carburetor. No. & Type: “Zenith Stromberg carbs or fuel injection. ~~Dry sump is allowed.~~”
Notes: “Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. Dry sump is allowed.”

2024-01-01 FP Correction to EP 924S/944 Spec Line

#35317 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

weightEP Porsche 944/924S 2.5L and 2.7L minimum weights corrected: 2479cc to 2306–2363 lbs, 2681cc to 2358–2415 lbs.

As printed in Fastrack

In EP spec line, Porsche 944/924S 2.5L (2V) / 2.7L (2V) (83-89), change Weight as follows:

A specification table follows in the original; it is not shown here.

2024-02-01 FP Update 1988-1991 Civic to Match 1988-1991 CRX

#35399 from Enrik Benazic · Rule change · TB 24-02 (2024-01 Fastrack)

faster · weightHP Honda Civic 1.5 1988-91 minimum weight drops 70 lbs to 2175; also 2-speed and 3-speed minimums cut 72 and 73 lbs.

As printed in Fastrack

In HP, make the following weight change:
Honda Civic 1.5 (88-91)
~~“2245~~ 2175
*~~2301~~ 2229
**~~2357~~ 2284”

2024-03-01 AS Request to Classify 1970-1981 Camaro and Firebird in AS

#33659 from Brandon Vivian · Rule change · TB 24-03 (2024-03 Fastrack)

addedChevrolet Camaro, Pontiac Firebird 70–81 Full Prep classified in AS at 3400–3600 lbs with 108.0 wheelbase, specific head castings, and suspension modifications permitted.

As printed in Fastrack

In AS Spec Lines, classify Chevrolet Camaro, Pontiac Firebird (70-81) Full Prep as follows:
AS Wheelbase Gear Ratios
Std. (or Alt.)
Brakes
(Max)
(in/mm)
Weight (lbs) Notes:

A specification table follows in the original; it is not shown here.

2024-03-01 AS Fuel Cell 12

#34194 from Clark Cambern · Rule change · TB 24-03 (2024-03 Fastrack)

addedAS class adds fuel cell location notes to multiple Cadillac, Chevrolet, Dodge and Ford models: cells within 24 inches of standard tank.

As printed in Fastrack

In AS Spec Lines, add to Notes as follows:
Cadillac CTS-V (04-07): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken
from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.”
Chevrolet/Pontiac Camaro & Firebird (93-02): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Chevrolet/Pontiac Camaro & Firebird (93-02): “Fuel cells must be located within 24 inches of the standard tank. The 24
inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Chevrolet Camaro SS (V8) (10-15): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Chevrolet Camaro (10-15): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Dodge Challenger (08-20): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Ford Mustang GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Ford Mustang Coupe GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch
measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with
installation of a safety fuel cell.”
Ford Mustang GT 5.0l (15-17): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement
is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”
Ford Mustang GT (05-14): “Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is
taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a
safety fuel cell.”

2024-03-01 AS Please Classify the 6th Gen Into AS.

#35448 from Daniel Richardson · Rule change · TB 24-03 (2024-03 Fastrack)

addedChevrolet Camaro 6th gen Full Prep added to AS class at 3400 lbs base or 3600 lbs with built engine.

As printed in Fastrack

In AS Spec Lines, classify Chevrolet Camaro (16-) Full Prep as follows:
AS
Wheelbase Gear Ratios
Std. (or Alt.)
Brakes
(Max)
(in/mm)
Weight (lbs) Notes:
Chevrolet
Camaro (16-)
Full Prep
110.6 3.42, 2.28,

A specification table follows in the original; it is not shown here.

2024-03-01 FP GCR Correction - Redundant HP Spec Lines

#35623 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

removedHP removes four redundant VW spec lines: Rabbit Cabriolet 1780, Scirocco 1588, Scirocco 1780 8-valve 83-88, Scirocco 1588.

As printed in Fastrack

In HP Spec Lines, delete the following redundant spec lines in their entirety:
Spec line #10 - VW Rabbit Cabriolet 1780
Spec line #3 - VW Scirocco 1588
Spec line #4 - VW Scirocco 1780 (8-valve) (83-88)
Spec line #5 - VW Scirocco 1588

2024-03-01 AS spec lines

#35713 from American Sedan Committee · Rule change · TB 24-03 (2024-03 Fastrack)

unclearAS class: Ford Mustang GT 05-14 Restricted prep added; Cadillac CTS-V 04-07 to 3450 lbs; Camaro/Firebird variants reconfigured with weight and notes changes; Dodge Challenger 08-20 restrictor 76mm to 80mm; Ford Mustang variants updated wei…

As printed in Fastrack

In AS Spec Lines, classify Ford Mustang GT (05-14) with Restricted prep Engine as follows:
AS
Wheelbase Gear Ratios Std.

A specification table follows in the original; it is not shown here.

Applies to Ford Mustang GT on this page: Michael Kamalian, Gregory Eaton, James Jost

2024-03-01 FP Update FP Protege (01-03) Model Info

#35715 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

wordingFP Mazda Protégé ES (01-03) renamed to Mazda Protégé ES/5 (01-03).

As printed in Fastrack

In FP Spec Lines, Mazda Protégé ES (01-03) change vehicle as follows:
"Mazda Protégé ES/5 (01-03)"

Super Tour Mar 2024 → Super Tour Mar 2025 2024-03-08 to 2025-03-07

2024-04-01 AS Restricted Prep Aftermarket Parts Request

#35682 from Tom Aquilante · Rule change · TB 24-04 (2024-04 Fastrack)

addedAS Camaro, Firebird 93-02 and GTO 04-06 add approved LS1 connecting rod part numbers to Notes.

As printed in Fastrack

In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes the following:
"For the LS1connecting rods Callies p/n CSC6100DS6A2AH, Scat rods p/n 2-1CR6100-944, GM performance rods p/n 12649190."
In AS Spec Lines, Pontiac GTO (04-06), add to Notes the following:
"For the LS1connecting rods Callies p/n CSC6100DS6A2AH, Scat rods p/n 2-1CR6100-944, GM performance rods p/n 12649190."

Applies to Chevrolet Camaro Z-28 on this page: Phillip Waters

2024-04-01 AS Allowance of 11

#35824 from American Sedan Committee · Rule change · TB 24-04 (2024-04 Fastrack)

faster · tyres & wheelsAS Cadillac CTS-V, Chevy Camaro SS V8, Dodge Challenger, Ford Mustang GT 5.0L, Pontiac GTO allowed 11" wheels until 3/1/25.

As printed in Fastrack

In AS Spec Lines, Cadillac CTS-V (04-07), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Chevrolet Camaro SS (V8) (10-15), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Dodge Challenger (08-20), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Ford Mustang GT 5.0l (15-17), add to Notes the following:
"11" wide wheels can be used until 3/1/25."
In AS Spec Lines, Pontiac GTO (04-06), add to Notes the following:
"11" wide wheels can be used until 3/1/25."

Applies to Ford Mustang GT on this page: Michael Kamalian

2024-05-01 AS 6th gen Camaro limited prep

#35733 from American Sedan Committee · Rule change · TB 24-05 (2024-05 Fastrack)

addedAS Chevrolet Camaro 1LE (2016-) added with 3600 lbs minimum weight, 275 tires, 60mm restrictor, 345/338mm brakes.

As printed in Fastrack

In AS Spec Lines, classify Chevrolet Camaro 1LE (2016-) as follows:
AS Wheelbase Gear Ratios Std. (or Alt.)
Brakes
(Max)
(in/mm)
Weight (lbs.) Notes:
Chevrolet
Camaro, 1LE
(2016-)
110.6 2.66,1.78,1.30,0.74,.5 (F)

A specification table follows in the original; it is not shown here.

2024-05-01 AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK

#35825 from Desi Colon · Rule change · TB 24-05 (2024-05 Fastrack)

addedAS Chevrolet/Pontiac Camaro & Firebird 82–92 5.7L LS1 classified: 3200 lbs, 13.1×1.27 disc brakes, 17 in max wheel, 65 mm restrictor, SLP intake lid permitted.

As printed in Fastrack

In AS Spec Lines, classify Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V-8 LS1 (Aluminum Block, Aluminum Heads) 2 valves
per cylinder, as follows:
AS Wheelbase Gear Ratios Std.

A specification table follows in the original; it is not shown here.

2024-05-01 FP Request to Replace CRX Plastic Panels

#35876 from Darryl Saylor · Rule change · TB 24-05 (2024-05 Fastrack)

addedFP Honda CRX 84-87 plastic front header nose panel, rocker skirts, door caps can now be replica alternate material stock appearance.

As printed in Fastrack

In FP spec line "Honda CRX / CRX Si (84-87)", add the following wording to the Notes section:
"The plastic OE front header/nose body panel, lower rocker side-skirt, and lower door cap panel can be replaced by a
replica, which may be constructed of an alternate material, provided its appearance remains stock."

2024-05-01 AS Full Prep Head

#35891 from American Sedan Committee · Rule change · TB 24-05 (2024-05 Fastrack)

added · engineAS Chevrolet Camaro, Firebird, and Ford Mustang now permit Flo Tek cylinder heads in multiple generations.

As printed in Fastrack

In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (82-92), add to Notes the following:
"Flo Tek Head part #102-500 are permitted."
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), add to Notes the following:
"Flo Tek Head part #102-500 are permitted."
In AS Spec Lines, Chevrolet Camaro (10-15), add to Notes the following:
"Flo Tek Head part #102-500 are permitted."
In AS Spec Lines, Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86), add to Notes the following:
"Flo Tek Part # 203-500 are permitted."
In AS Spec Lines, Ford Mustang Including Cobra 94-04, add to Notes the following:
"Flo Tek Part # 203-500 are permitted."
In AS Spec Lines, Ford Mustang GT (05-14), add to Notes the following:
"Flo Tek Part # 203-500 are permitted."

Applies to Chevrolet Camaro Z-28 on this page: Phillip Waters

Applies to Ford Mustang GT on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

2024-05-01 FP FP data and parity

#35896 from Production Committee · Rule change · TB 24-05 (2024-05 Fastrack)

added · inductionFP Acura Integra 90-01 and Honda Civic Del Sol VTEC, Civic Si 99-00 require 55mm flat plate intake restrictor.

As printed in Fastrack

In the following FP spec lines, add the following wording to the Notes section:
Acura Integra (90-93)
Acura Integra LS (94-01)
Acura Integra GSR (92-93)
Honda Civic Del Sol VTEC (94-97)
Honda Civic Si (99-00)
"55mm Flat Plate Intake Restrictor is required."

2024-06-01 AS Request for Classification of 2018-2023 mustang In

#35764 from Michael Kamalian · Rule change · TB 24-06 (2024-06 Fastrack)

addedAS adds 2018-23 Ford Mustang GT 5.0L at 3600 lbs, 275 tire, 60mm restrictor, optional Brembo front brakes.

As printed in Fastrack

AS Spec Lines, classify Ford Mustang GT 5.0L (2018-) as follows:
AS Wheelbase Gear Ratios

A specification table follows in the original; it is not shown here.

2024-06-01 FP NIssan 300ZX Z31 to EP

#35830 from Murphy Nichols · Rule change · TB 24-06 (2024-06 Fastrack)

addedNissan 300ZX 84–89 added to EP, 2550–2678 lbs, 2960 cc SOHC, fuel injection, 12.0:1 compression, 0.500" valve lift limit.

As printed in Fastrack

In EP Spec Lines, classify Nissan 300ZX (84-89), as follows:

A specification table follows in the original; it is not shown here.

2024-06-01 FP RX7 1993 and Up Request In EP Spec Lines, classify

#36031 from Edward Zabinski · Rule change · TB 24-06 (2024-06 Fastrack)

addedMazda RX-7 92-97 added to EP Prep as Level 2 rotary 13B 6-port, 2200–2310 lbs, carb or fuel injection, 42 mm choke.

As printed in Fastrack

Mazda RX-7 (92-97) as follows:

A specification table follows in the original; it is not shown here.

2024-06-01 FP Clean-up Multiple EP RX-8 Spec Lines In EP

#36156 from Production Committee · Rule change · TB 24-06 (2024-06 Fastrack)

removed · cars addedEP Mazda RX-8 (04-11) alternate spec line removed; single spec line retained.

As printed in Fastrack

Spec Lines, make the following changes to the two Mazda RX-8 spec lines.
Remove spec line entirely:
~~Mazda RX-8 (04-11)~~
Remove the wording "alternate":
Mazda RX-8 (04-11)~~(alternate)~~
Spec Mazda (SM/SMX) None.

2024-08-01 FP Errant entry in HP production line item

#36231 from Angus Crome · Rule change · TB 24-08 (2024-08 Fastrack)

wordingHP Volkswagen Golf and Jetta 85-92 track correction: front 1537 mm (60.5 in.), rear 1529 mm (60.2 in.).

As printed in Fastrack

In HP Spec Lines, change Track (F/R)mm/(in.) as follows:
Volkswagen Golf (GTI, GT, GL) (85-92): "2 1537/1529 (60.5/60.2)"
Volkswagen Jetta (GLI, GL) (85-92): "2 1537/1529 (60.5/60.2)"

2024-09-01 SM SMX Camera Rule Correction

#36496 from Paul Gauzens · Rule change · TB 24-09 (2024-09 Fastrack)

wordingSMX Spec MX-5 camera requirement: non-functioning recorder now will instead of may warrant penalty or disqualification.

As printed in Fastrack

In GCR, Section 9.1.7.1.D.21., change as follows:
"Cars running in Spec MX-5 must have a functioning video recorder/camera during all qualifying and race sessions as described
in 9.3.11. Upon request by an SCCA official, competitors must provide their video recording/data, which may be used by the
SCCA for any purpose including but not limited to rule enforcement and marketing. Failure to comply with a video request from
an official, or having a non-functioning video recorder/camera ~~may~~ will be grounds for penalty or disqualification."

2024-09-01 SM Committee) AIM ECU Protocol

#36556 from Spec Mazda (SM/SMX · Rule change · TB 24-09 (2024-09 Fastrack)

added · engineSM and SMX must run latest AIM Data Logger Spec MX-5 ECU Protocol, effective 2024-09-01.

As printed in Fastrack

In GCR, Section 9.1.7.1.D.20., add the following:
“e. All cars must run the latest AIM Data Logger Spec MX-5 ECU Protocol.”
These specifications are part of the SCCA GCR and all automobiles shall conform to GCR Section 9.
A. PURPOSE AND
INTENT
Spec MX-5 (SMX) is based on four pillars: affordability, reliability, tech-ability, and fun to drive, the (SMX) Spec MX-5 car
provides the membership with the opportunity to compete in similarly prepared, low cost, 2006-2015 production-based MX-
5 car with limited modifications, intended to help deliver the most fair and competitive racing competition in SCCA Road
Racing
B. CLASSIFIED CARS
AND WEIGHTS
2006-2015 production-based MX-5
Cars are to be weighed with the driver and required ballast.
C. AUTHORIZED
MODIFICATIONS
Only the left-hand drive, North American-version of the 2006-2015 Mazda MX-5 convertible & power retractable hardtop
(PRHT) are eligible. The original OE vehicle identification number (VIN) stamped on the firewall must correspond with the
model year automobile as classified. VIN plates or stampings must remain in place, with the firewall VIN taking precedence.
A Mazda Factory Shop Manual for the specific make, model, and year of automobile is required to be in the possession
of each entrant. The manual may be in the form of printed material, microfiche, CDs, DVDs, and/ or Internet access to
manufacturer sponsored web-based databases that is readily accessible at time of inspection. The manual is intended to
aid scrutineers in identifying parts and the configuration of the automobile.
The items outlined in this VTS document represent the only modifications and safety items permitted and/or required on
Spec MX-5 vehicles other than safety items as required in SCCA’s current GCR Section
9. Parts and components may not perform an unauthorized function (i.e. Modifications must be stated as authorized or
cannot be done).
If the Mazda Factory Manual or these rules provide only a partial specification or no specification at all, the Mazda parts may
not be modified beyond what is permitted in these rules. Compliance will be determined by comparison to new or like parts
and/or the parts compliance measurement listing delivered by Mazda. Other approved parts with only a partial specification
or no specification available in these rules may not be modified.
Assembly, rebuild, and refurbishment procedures, and all associated dimensions must adhere to the published factory
service procedures, except as otherwise stated in these rules. No components may be added or omitted from those
specified by the published factory service procedures. All components must be comply with stated standard dimensions.
It is permitted to use industry standard procedures to repair damaged components.
The use of any painting, coating, plating, metal treatment process or impregnating substance (e.g., anti- friction, thermal
barrier, oil shedding coatings, chrome, anodizing, REM, isotropic finishing, etc.) to any internal engine surface, internal
axle components, internal transmission or differential surface, internal or external surfaces of the intake manifold, exhaust
manifold or down tube, is prohibited.
D. VEHICLE
TECHNICAL
SPECIFICATIONS
(VTS)
1. Vehicle Weight
a. The minimum vehicle weight with driver is 2,525.0 lb.
2. Ballast
If ballast is required to meet the required minimum weight, it must be added as follows:
a. A ballast base plate must be securely mounted using the factory OE passenger seat mounting bolt holes and bolts. Any number
of additional segments of ballast may be attached to the base plate.
b. Each segment of ballast must be fastened to the base plate with a minimum of two (2) one-half (1/2) inch bolts/studs and
positive lock nuts of SAE Grade 5/ Metric 8.8 or better and must utilize large diameter, load distributing washers. In lieu of
positive lock nuts it is permitted to positively thread the additional segments of weight into the base plate.
c. Holes are not permitted to be drilled in the floor pan to mount ballast.
3. Chassis
a. Towing eyes per SCCA’s current GCR Section 9.3 are required. There must be an arrow that strongly contrasts with the vehicle
paint scheme pointing to each tow eyestrap.
9.1.7.1 SPEC MX-5 (SMX)
b. All cars must use the front subframe PT# - NE51-34-800C
c. All cars must use the rear subframe PT# - NE51-28-800B.
d. OE strut tower brace is required; it is comprised of three (3) components; see Table 1 for part numbers.
e. An engine to fender brace located on the passenger side of the engine bay may be used if mounted in such a way that it does not foul brake
lines, fuel lines, or other systems that would interfere with the safe operation of the vehicle under race conditions – see Table 1 for allowed
modifications. (Mazda Motorsports PT# 0000-07-5600)
f. Disabling or removing of the door locking mechanism must be performed.
g. To facilitate frequent lifting of the vehicle, a 3/4” boxed tube not to exceed 12” long may be added under the rocker panel inboard of
the factory pinch weld flange on each side of the vehicle.
h. Convertible tops/power retractable hard tops (PRHT) and attaching hardware must be completely removed.
i. All chassis, structural, and electrical repairs, if performed, must be in conformity with factory procedures, specifications, and dimensions.
Unless specifically authorized by the manufacturer for repair or permitted by these rules, no reinforcement (e.g., seam welding, material
addition, etc.) is permitted.
j. Removal of excess wiring is permitted provided it serves no other purpose and does not splice or interrupt the OE harnesses. Removal of the
following systems is permitted: audio equip- ment; power seats; airbag/supplemental restraint systems components; heated seats; interior
lighting; power windows; and power door locks. (No additional wiring may be added except as permitted in other sections - e.g., Section 16:
Electrical Equipment.)
Table 1: Strut Tower Brace Parts
Description Mazda Part #
Right Side of Strut Tower
Brace
NE57-56-48X
Left Side of Strut Tower
Brace
NE57-56-49X
Center Section of Strut
Tower Brace
NE57-56-48ZA
k. A hole is permitted to be drilled in part #’s NE57-56-48X and NE57-56-49X to allow for access to the shock adjuster screw is permitted (it is
recommended that the hole not be larger than 15mm); NE57-56-48X may be modified in order to allow room for the engine passenger side
engine brace; no other modifications or other braces are permitted.
l. MX-5 donor chassis with originally equipped with 16” OE wheels require installation of
OE strut tower brace (part # NE57-56-35XA).
m. To facilitate engine bay air flow for cooling purposes it is permitted to remove the section outlined below in red from OE PT# NE57-56-
35XA. Block-off plates must be installed at the fresh air vent for the HVAC module at the firewall under the cowl to isolate driver
compart- ment from engine compartment.
(FIREWALL BLOCKOFF PLATE 0000-07-5832) No additional modifications are permitted.
4. Body
a. Interior and exterior door handles are required to remain operable. Alternate interior door handles or cord/strap are permitted.
b. The driver’s and passenger’s side inner door structural panel may be removed to fit the cage.
c. The stock side impact/anti-intrusion beam must not be modified or removed.
d. Door locking mechanisms must be disabled or removed.
e. A minimum of two (2) of the brake lights must be in working order per the current GCR Section 9.1.
f. The two (2) OE unmodified, external mirrors for the correct the Mazda MX-5 (left and right) are required; they must be
mounted in stock location and may not be modified.
g. OE interior rearview mirror or an aftermarket rearview mirror must be used.
h. 2006-2015 MX-5 bodywork may be updated or backdated, OE body parts only. (This includes Mazda OE accessory body
parts such as trunk lid spoiler, side skirts, front air dam.)
i. Mazda Motorsports’ fiberglass headlamp replacements may be used; (See table 2)
no modifications or substitutions are permitted; exceptions: painting, covering, and wrapping.
Table 2: Headlamp Replacement Covers
Model Year Mazda Part # Description
2006-2008 0000-07-5818-LT Left Side
2006-2008 0000-07-5818-RT Right Side
2009-2015 0000-07-5819-LT Left Side
2009-2015 0000-07-5819-RT Right Side
j. Lexan windshield may be used in place of the stock windshield. (Mazda Motorsports PT# -
0000-07-5101-5S)
k. Windshield clips per current GCR Section 9.3 windshield clips are recommended.
l. Hood and trunk pins or clips are permitted. Factory hood and trunk latches must remain intact and operational and may not be
removed, disabled or altered.
m. Front under hood weather strip must remain intact PT#- NE51-56-750
n. Rear under hood weather strip must remain intact PT#- NE51-56-760
o. Modification of release cables is permitted to facilitate external pull/opening straps/pulls/cords.
p. A radiator screen of 0.125” minimum stainless-steel mesh may be added in front of the radiator.
1. The screen must be a single layer and must be installed to the bumper cover and or grill and be contained entirely within the
bodywork of the vehicle.
2. Tape may be applied to the mesh screen.
3. The OE grill must remain intact.
q. It is allowed to apply roll bar padding to the crash support bar (52-070) located behind the front bumper to prevent damage to the
bumper.
r. Front and rear fender lips may be rolled to prevent tire damage.
s. Front OE fender liners must be intact and unmodified, except for what is allowed in section 13. J regarding brake ducts.
Repairs due to on-track damage is allowed so long as it serves no other purpose.
t. OE fog lights lens/glass must be removed. This will allow for the installation of brake duct kit (Mazda Motorsports’ part # 0000-03-
5301-NC.) The remaining opening from the fog light lens must either be blocked, or a connection must be made from the fog lamp
opening/hole in the bumper fascia to a brake duct attached to the hub.
u. Side marker lenses may be removed, and holes may be covered.
v. OE hard top or the unmodified Mazda Motorsports hard top (part # 0000-07-5901-CC)
are permitted.
w. PRHT chassis cars must trim the finish panel with the 3rd brake light to fit one of the approved hard tops.
1. Hhardtops may be painted or wrapped.
2. OE hard top latches must be removed and replaced with positive fasteners.
3. The front of the hard top may attach to the upper windshield bar of the roll cage.
4. It is permitted to run one single piece of racer tape to cover the leading edge of the after- market hard top where it meets
the factory windshield frame.
5. Openings beneath the hard top seal to the body are not permitted. The hard top must be securely mounted to the body of the vehicle
and perform no other purpose.
6. Body repair must be performed to maintain stock body contours, lips, profiles, etc. body repair modification must not increase clearance.
x. To improve driver’s exit through the window area, the driver and passenger vent window and vent window supporting frame may be removed
as an assembly.
1. Vent windows may be modified to accept fresh air ducting.
y. OE radio antennas may be removed. Antennas for two-way radios may be added.
z. Insulation & undercoating may be removed.
aa. All cars must run with both the front door windows fully open (i.e. fully down).
5. Cockpit /
Trunk
a. All interior trim components such as carpets, seats, cargo bins, seat belts, floor mat, firewall insu- lation/blanket, sound deadener patches,
undercoating, radio systems, speakers, dome lights, grab handles, sun visors and their insulating and attaching materials, must be removed.
Other than to provide for the installation of required safety equipment or other authorized modifications, no other driver/passenger
compartment alterations or gutting are permitted.
b. It is permitted to install a radio replacement panel.
c. The outer edges of the dashboard may be cut the minimum amount required to install the roll cage.
d. Air bag systems must be disarmed and must be removed.
e. It is permitted to remove all components of the cruise control system.
f. The top portion of the door panels containing the door latch release handle must remain intact.
g. The lower portion of the door panels must be removed for installation of the roll cage. Gutting of the door may not go outside of the factory
seal.
h. The door window glass and window operating mechanisms must be removed.
i. The OE dashboard and its attaching hardware and brackets must be retained.
j. For installation of required safety equipment, however, it is permitted to modify the OE dash bar, so long as it is outboard of the first dash support
brackets (illustration below). Modification of the first dash support brackets, nor inboard from them, is not permitted. The OE dash bar must be
securely mounted.
k. The HVAC control module located under the dash may be removed together with the following: blower motor, evaporator core,
heater core and associated ducting. Once removed it is permitted to block the blower inlet passage on the firewall.
l. All openings between the driver/passenger compartment and the trunk / gas tank area that include the filler tube & fuel tank vent
must be filled completely with a metal bulkhead that is securely mounted (E.G. nuts/bolts, nut-serts, rivets). This shall close the
entire trunk from the driver/ passenger compartment and comply with current GCR Section 9.3.
m. Mazda Motorsports’ finish panel trim kit (part # 0000-07-5822) may be used to create the required bulkhead above
n. It is permitted to remove the driver’s side factory seat mounts, but not the floor pan.
o. It is permitted to remove the horn and all associated horn related components.
p. OE driver’s seat must be replaced with a one-piece bucket-type race seat per current GCR Section 9.3.
q. The passenger seat must be removed.
r. Any steering wheel except wood rimmed types may be used.
s. Any shift knob may be used.
t. The air conditioning equipment located in the engine compartment (AC compressor assembly, associated lines/dryer and the
condenser) must be removed.
u. Alternate gauges and instruments may be added. The original instrument cluster must remain connected and functional However,
it may be relocated to allow the mounting of an aftermarket dash such as an AiM. The wiring to relocate the dash may not be cut or
extended, it may only be re-routed. The remainder of the dashboard or panel must remain intact.
v. Modifications may be made to the foot pedals to improve the comfort and accessibility to the driver; relocation of mounting
points is not permitted.
1. Dead pedal/footrest and heel stop may be added.
w. Instrument clusters must be unmodified OE parts .
x. Two-way radios may be used.
y. Alternate means of windshield defrosting is permitted
6. Engine
Modifications
6.1. General
a. No modifications to the engine are permitted, except where specifically authorized within these rules. This includes but is not
limited to: all fuel injection and engine management components, as well as electrical, cooling, and lubrication systems.
b. All systems, unless otherwise stated, are subject to test procedures and must conform to OE
specifications as stated in the Mazda Factory Service Manual.
c. Permitted engine maintenance includes the replacement, but not modification, of external engine and engine systems parts.
1. No balancing, blue printing, lightening, polishing or other modification of moving parts of the engine is permitted.
2. All parts in the engine must be OE parts unless specified in this rule set.
3. For all Mazda part numbers in these specifications, superseding part numbers are consid- ered equivalent.
d. Compression ratio for 2.0L engines must be 11.00:1; calculated using the official Spec MX-5 calculator.
6.2. Engine Block
a. The engine block may be decked or milled to achieve the class specified compression ratio. Honing of cylinders is permitted to accommodate
piston clearance so long as a maximum standard diameter is not exceeded shown in Table 3.
b. The cylinders may be bored to accommodate piston clearance requirements so long as maximum permitted overbore diameter is not exceeded
shown in Table 3 below.
Table 3: Piston Sizes
Piston Part # Bore Diameter Max
Standard 0000-01-5310 87.6046mm (3.449”)
Allowed Overbore (.020) 0000-01-5310-OS 88.1126mm (3.469”)
c. It is not permitted to overbore a single cylinder; all cylinders must be bored equally.
d. Sleeving of cylinders is not permitted.
6.3. Crankshaft
a. OE Mazda MZR 2.0L (2009-2015) manual transmission crankshaft (part # LF9G-11-301) must be used with no modifications except for
machining or polishing polishing and/or machining of the bearing surfaces to allow the use of main and rod bearings as permitted
in Table 4 below.
Table 4: Crankshaft Measurements
easurement iameter Diameter
b. OE crankshaft (Mazda part # LF9G-11-301) must weigh a minimum of 31.75lb.
c. Maximum permitted stroke is as follows: 3.27” / 83.1mm
d. Shot peening is prohibited.
e. Bearings
1. Main and rod bearings must not be modified; coatings are not permitted.
2. OE bearings are permitted.
3. The only bearing sizes permitted other than OE are listed in see Table 5.
Sizes
Bearing Type Minimum Bearing
Width Minimum Bearing
Thickness Minimum Bearing
Weight Part #
Main Bearings
(Standard H) .630” 0.097” N/A 0000-01-5215-MB
Main Bearing
(Standard HX) .630” 0.097” N/A 0000-01-5216-MB
Rod Bearings
(Standard H) .630” 0.057” 28g 0000-01-5213-RB
Rod Bearing
(Standard HX) .630” 0.057” 28g 0000-01-5214-RB
f. The crank trigger must not be modified; it must be installed per the Mazda Factory Service Manual.
g. OE crank pulley/balancer (Mazda part # LF94-11-400) must not be modified and must be installed per the Mazda Factory Service Manual.
h. Knife edging of the crankshaft is not permitted.
i. Modifications to the crankshaft counterweights are not permitted.
j. Coatings, REM or metal treatments of any kind are not permitted.
k. Alternate shifter bushing located at the bottom of the shift lever is allowed.
6.4. Connecting Rods
a. OE Mazda MX-5 (2009-2015) manual transmission unmodified connecting rods (part # LF9G- 11-210) must be used. Connecting
rod weight with cap and bolts must not be less than 530 grams.
6.5. Pistons
a. Mazda Motorsports’ competition pistons (standard bore part # 0000-01-5310; oversized part # 0000-01-5310 OS) are required;
no modification is permitted.
b. The minimum weight of the piston, less wrist pin and hardware, must not be lighter than 290 grams.
c. Mazda Motorsports’ competition wrist pin (part # 0000-01-5310-PN) must be used.
d. The minimum weight of the wrist pin must not be lighter than 80 grams.
e. Modification of the piston ring end gap width is permitted.
6.6. Cylinder Head
a. Mazda Motorsports’ competition cylinder head (part # 0000-01-5300) must be used; no modi- fications to the cylinder head are
permitted outside of the gasket face surface outlined below in Table 6.
b. Intake runner CC volume is 182cc +/- 1cc.
c. Exhaust runner CC volume is 114cc +/- 1cc.
d. Combustion chamber volume may not be below 41cc.
e. The gasket face of the cylinder head may be resurfaced provided the maximum allowed compression ratio is not
exceeded.
I. Surfacing of the head gasket surfaced must be in a flat plane.
II. Cylinder head gasket surface distortion may not exceed .010mm or 0.004”.
f. The minimum height of the cylinder head as measured must be at least (TBA)
g. The following head gaskets in Table 6 below are permitted; no other gaskets may be used.
Table 6: Head Gasket Measurements
Description Thickness Mazda Part #
OE Gasket 0.017” approximate crush
depth L3G2-10-271A
Competition
Gasket 0.55mm (0.021”) 0000-01-5319-21
Competition
Gasket 0.75mm (0.030”) 0000-01-5319-30
Competition
Gasket 1.0mm (0.040”) 0000-01-5319-40
Competition
Gasket 1.3mm (0.051”) 0000-01-5319-51
6.7. Camshaft and Camshaft Timing
a. Camshafts must not be modified; see Table 7 for OE camshaft part numbers.
Table 7: Camshaft part numbers
Description Mazda Part #
Intake Cam L3E3-12-420
Exhaust Cam L309-12-441B
b. Camshaft and crankshaft sprockets must not be modified; see Table 8 for part numbers.
shaft Sprocket Part #s
t #
4X0C
425
c. Cam timing must not be altered; chain must be installed as stated in the Mazda Factory Service Manual.
d. OE timing chain (Mazda part # LF7A-12-201) is required; no modification is permitted.
e. OE timing chain components must be used; see Table 9 for Mazda part numbers.
Table 9: Timing Chain Guide Part #s
Description Mazda Part #
Fixed Guide LF01-12-614
Tensioner Guide LF01-12-671
6.8. Valves
a. OE valves must not be modified (including reshaping); see Table 10 for Mazda part numbers.
le 10: Valve Part #s
b. Valve location or angle must not be moved.
c. Valve guides may not be replaced.
d. Valve job measurements must be as follows:
1. Intake 35 top 45 seat 65 bottom 77 bottom seating angle width is 1.0mm
2. Exhaust 40 top 45 seating to radius seating angle width 1.2 mm.
3. Valve stem installed height must be per the Mazda Factory Service Manual.
4. Valve stem seals must be OE.
6.9. Valve Springs
a. Mazda Motorsports’ competition valve springs (part # 0000-01-5319-SP) are required.
6.10. Intake Manifold
a. OE intake manifold (Mazda part # LF9G-13-130B) is required; no modification is permitted (e.g., no material may be added or removed; no
painting or coating on the exterior or interior permitted).
b. All air entering the engine must pass through the throttle body and metered by the mass airflow sensor.
c. Removal of these factory EGR components is permitted: Valve, crossover pipe, coolant lines (EGR DELETE KIT 0000-06-5447)
d. If factory EGR components are removed, the following ports must be blocked:
1. Intake manifold cross over pipe port.
2. Cylinder head cross over pipe port.
3. EGR valve port on back of cylinder head.
6.11. Intake System
a. Cars must replace OE air box with the Mazda competition cold air intake kit (part # 0000-06- 5150-KT); no modification (e.g., ducting or
baffling of air, venturi cones) to the cold air intake kit is permitted.
b. No alteration to the intake tube length, diameter, or shape is permitted.
c. The air filter supplied in the Mazda Motorsports competition cold air intake kit may be refreshed
with the Mazda Motorsports’ competition air filter (part # 0000-06-5204).
6.12. Fuel System
a. Fuel must comply with SCCA GCR section 9.3.25
b. OE fuel pump (Mazda part # LFG1-13-350) is required; no modification is permitted.
c. It is permitted to remove the unleaded fuel restrictor from the filler neck. (GCR 9.3.26)
d. Mazda Motorsports’ competition fuel rail that includes fuel pressure gauge, and fuel sampling test port and hose kit (part #
0000-06-5207) is optional.
1. Fuel pressure sensor integrated into the required AIM data acquisition system is required. It must be operational and able to be
viewed when pulling a competitor on track data.
2. The addition of a switch or jumper located in the under-hood fuse box is allowed to acti- vate the fuel pump. This modification may
serve no other purpose.
3. One operational fuel sample test port is required. Fuel sample test ports shall be made from dry break fuel rated quick disconnects.
No other style of fuel sample test port is allowed (e.g., Schrader valves).
4. No other modifications permitted.
e. OE fuel pressure regulator (Mazda part # LFB6-13-280) is required.
1. Vehicle must run between 54 and 63 PSI of fuel pressure.
f. OE injectors (Mazda part # L3G5-13-250) are required; no modification is permitted.
1. Flow rates for the injectors must fall within the factory tolerance of 204-216ml (204-216 cc, 12.5-13.1 cu in/minute).
6.13. Lubrication System
a. OE engine oil filter is required; no substitutions permitted.
b. OE oil pump PT# L310-14-100J is required and no modifications are permitted.
c. Mazda Motorsports’ competition oil cooler adaptor kit with lines (part # 0000-01-5100KT) is required; no modification is
permitted.
d. Oil pressure sensor integrated into the required AIM data acquisition system is required. It must be operational and able to be
viewed when pulling a competitor on track data.
e. Oil and lubricants are unrestricted.
6.14. Engine Control Unit (ECU)
a. Reference penalties for non-compliance of the Spec ECU flash in Section 21 below. Modifica- tion or attempted modification of
the Spec ECU flash will result in a 12-month suspension from competition and $1,000.00 fine.
b. Mazda Motorsports’ competition ECU (part # 0000-01-5379) is required; serial number must be visible; external or internal
modification is not permitted.
c. ECU calibrations and inputs must not be modified.
d. OE engine electrical harness (part # NH18-67-020A) is required; no modification is permitted.
e. OBDII diagnostics port must be operational in all cars.
1. The check engine light must be operational and perform the function test at start up.
2. The OBDII port must be available at all times (including during the race) for tech officials to install test equipment as necessary.
3. If a competitor uses the OBDII port to power any type of data acquisition system, he/she would be responsible for providing the
splitter cable to plug in both units or unplug the data acquisition system.
f. Instrument panel clusters must be operational and unmodified OE parts.
g. Temporary data acquisition devices may be installed by the sanctioning body for technical compliance.
h. Removal of Mazda ECU insulator PT# LFG1-13-3C1 is permitted (diagram below)
6.15. Miscellaneous
a. The factory air conditioning system and all associated lines, compressor, condenser and evap- orator must be removed.
1. Once the AC compressor is removed, the OE AC pulley delete kit (Mazda part # LF17-15- 940E) is required.
b. Serpentine belt Gates PT# 6PK-2170 or same size equivalent is required.
7. Exhaust
a. OE exhaust manifold and OE heat shield must be replaced with Mazda Motorsports’ competi- tion part # 0000-06-5407-NC; no modification
is permitted (e.g., internal or external wraps, coatings, paints, metal treatments, thermal barriers etc.).
b. OE exhaust system must be replaced with Mazda Motorsports’ competition part # 0000-06- 5427-NC; no modification is permitted (e.g.,
internal or external wraps, coatings, paints, metal surface treatment, thermal barriers etc.).
c. The forward oxygen (O2) sensor (OE Lambda Sensor) must remain in the factory location and in full working order. Mazda Motorsports’
competition O2 sensor installation kit wiring extender (part # 0000-10-5320) is permitted.
d. The secondary post catalytic oxygen (O2) sensor must be removed.
e. Heat shielding
1. OE heat shield protecting ABS unit from header may not be removed or modified.
2. OE muffler heat shield may not be removed or modified.
3. It is permitted to wrap the exhaust pipe from the mid connection flange to the muffler.
(see red arrows in picture below)
4. Use of heat shielding material on transmission tunnel to replace OE heat shielding is permitted. OE heat shielding
must be removed from transmission tunnel. (see diagram below)
8. Cooling System
(cooling system
checklist)
a. Mazda Motorsports’ competition radiator and oil cooler assembly (part # 0000-01-5504-CR) is required (e.g., OE is not
permitted).
b. The radiator using the OE mounting brackets must be installed in its original location.
c. The oil cooler may not be moved or altered from the pre-assembled mounting location.
d. Radiator ducting may be placed on each side of the radiator tanks and the undertray to force air through the radiator fins. The
gap between the top and sides of the radiator may be sealed but shall not perform any other function.
e. The unmodified OE cooling fan must be maintained in full working order and mounted in the stock location. Axillary control of
the radiator cooling fan may be added to activate the fan independent of the ECU, OE control of the fan must remain intact.
f. Thermostats may be modified, removed or replaced.
g. The OE water pump (Mazda part # 1F70-15-100) is required; no modification is permitted.
h. The OE water pump pulley (Mazda part # L327-15-131) is required; no modification is permitted.
i. Engine cooling system hoses and clamps may be substituted.
j. The heater core may be removed along with HVAC evaporator core including all associated hard pipes and hoses. This is to include
OE water to oil cooler lines as well as throttle body coolant lines. (Rear coolant pipe 0000-01-5514, bottom coolant pipe 0000-
01-5515)
k. The OE engine coolant expansion tank may be replaced with any aftermarket part but and must not serve another purpose.
9. Clutch, Pressure Plate and Flywheel
a. Vehicle may use any combination of the options listed in Table 11 below.
Table 11: Clutch Component Part Numbers
Description Mazda Part #
Mazda Factory Clutch Disc LF05-16-460A
ACT Sprung Clutch Disc 0000-02-5420-AC
ACT Pressure Plate 0000-02-5405-AC
ACT Clutch and PP Kit 0000-02-5004-G6
Mazda Factory
Pressure Plate LF04-16-410A
b. The unmodified pressure plate must be bolted directly to the stock, unmodified flywheel.
c. OE flywheel (Mazda part # LF9G-11-500) is required. Factory Service Manual resurfacing specification is permitted; no
other modification is permitted.
d. Alternate clutch lines are permitted but must not serve another purpose.
e. Clutch components must adhere to the minimum weights listed in Table 12 below:
Table 12: Clutch Component Part Numbers
Description Minimum Weight (lb.)
Clutch disc 3.5
Pressure Plate 9.4
Flywheel 15.80
10. Transmission
a. OE 2006-2015 6-speed gearbox and 4.10 final drive ratio are required.
b. No modification of the internal parts and ratios are permitted except the installation of the unmodified parts contained in the Mazda
Motorsports MX-5 transmission upgrade kit (part # 0000-02-5700).
c. Mazda Motorsports Competition gear set 0000-02-6000 is allowed. Gear ratios are as follows: 1st - 3.82; 2nd - 2.26; 3rd - 1.64;
4th - 1.18; 5th - 1.00; 6th - 0.83/0.79. There are two (2) production 6th gears; either one is permitted.
d. Alternate shift knobs are permitted.
e. Nomex or aftermarket fireproof shift boots are permitted. Removal of the factory rubber shift boot is not permitted.
f. No treating, coating, polishing or modification of any transmission or components are permitted.
g. Fluids and/or lubricants may be substituted with any lubricant.
h. Updating or backdating of transmissions from 2006–2015 is permitted; unmodified OE shifters must be retained. The use of short throw
shifters is prohibited.
i. An single inspection hole (not to exceed 1.5” in diameter) in the bottom of the bell housing is permitted for the sole purpose of technical
inspection of the flywheel. It is permitted to plug or tape over theat hole.
j. Transmission cooler(s) are permitted.
11. Differential
a. Only the Following differentials are allowed.
1. Mazda Motorsports, unmodified, Torsen limited slip differential – 0000-02-5564
2. OE, unmodified, limited slip differential - Mazda part # MS03-27-200B
3. OE, unmodified, open differential are permitted.
b. RX-8 differential mounting bracket (Mazda part # F151-39-730B) is permitted.
c. Mazda Comp diff bushings 0000-04-5510 is permitted (MX-5 diff mount)
d. Polishing, metal treatment or coating of differential or axle components are not
permitted.
e. Removal of metal/rubber isolator on the pinion flange is permitted.
f. Differential cooler(s) are permitted.
12. Suspension and Steering: Suspension
Modifications are limited to the addition of the Mazda Motorsports Spec MX-5 kit; details are as follows (including all
modifications permitted):
a. OE control arms are required; no modification is permitted.
b. Mazda Motorsports’ TSB MX-5-002 must be followed re: the rear shock thread protector found in the “Spec MX-5: Four Pillars”
page on MazdaMotorsports.com. The thread protector must measure 1.250”. (The TSB will not be applicable to the supply from
Mazda Motorsports received after 7.15.2020 as they will have the updated thread protector.)
c. Anti-roll bar links may be replaced with Mazda part # 0000-04-5597-KT
1. Cockpit adjustability is not permitted.
d. Mazda Motorsports’ competition sway bars are required, mounting guidelines:
1. Metal shims up to 1/8” total thickness are permitted between each anti-roll bar mount shackle and the stock mounting
point on the chassis.
2. One end of the sway bar(s) may be disconnected as a suspension tuning aid.
3. The bar must remain in place and be solidly attached to the suspension on one end.
4. Sway bar end links must be installed on the unmodified stock attachment points.
e. Camber, caster, and toe are unrestricted within the limits of the unmodified factory adjust- ments in conjunction with Mazda
Motorsports front offset bushing (part # 000-04-5407-NC).
f. Minimum ride height is unrestricted.
g. Nuts & bolts may be replaced by similar items performing the same fastening function(s).
h. Relocation or reinforcement of any suspension parts or mounting points is not permitted, with the following exceptions:
1. Addition of spacers or washers on a horizontal plane is permitted at the rear lower shock mount to the spindle per the
shock installation instructions.
2. Updating to RX-8 rear toe link and rear trailing arm is permitted. See Table 13 below.
Table 13: Permitted RX-8 Trailing Arm and Toe Link Part #s
Description Mazda Part #
RX-8 Trailing Arm F189-28-200A
RX-8 Toe Link F189-28-45XA
i. OE power steering pump with pulley (Mazda part # NE51-32-650D) is required; Mazda Motor- sports Power steering flow
restrictor PT#- 0000-04-5532 is permitted; no other modification is permitted.
j. OE power steering rack (Mazda part #: NE51-32-110C) is required; no modification or reloca- tion is permitted.
k. Factory power steering reservoir may be replaced.
l. Wheel center caps must be removed.
m. All chassis, structural and electrical repairs must follow factory procedures, specifications, and dimensions as described in the
applicable service manual. Reinforcement (e.g., seam welding, material addition, etc.) is not permitted.
n. Steering lock mechanisms must be removed.
o. The distance from the outside of the wheel rim to outside of the opposing wheel rim for both the front and rear of the vehicle
must not exceed 69.5”.
I. The distance Measurement is obtained by measuring the distance between the wheel lips by going through
the wheel spokes at the bottom of the wheel at its widest point via tape measure. (Measure the outside wheel
lip of one wheel to outside wheel lip of the other wheel on same axle.)
p. Mazda Motorsports’ competition rear toe link (part # 0000-04-5426) is permitted; no modification is permitted.
q. Mazda Motorsport’s Spec MX-5 Suspension Kit includes the items set forth in Items in Table
14. seen below are components within this kit. No substitutions or modifications of parts are permitted. The
unmodified kits must be used in their entirety, except as specified.
Table 14: Spec MX-5 Suspension Kit (All parts are required; no modification is permitted.)
Description Location Mazda Part #
Shocks Front 0000-04-5291-SA
Rear 0000-04-5292-SA
Springs Front 0000-04-9700-08
Rear 0000-04-9400-07
Helper Springs Front/Rear 0000-04-9926
Front Penske
Mount Kit Front 0000-04-5359
Rear Penske
Mount Kit Rear 0000-04-5358
Sway Bar Kit Front and Rear 0000-04-5306-EB
Offset Bushings Front 0000-04-5407-NC
13. Hubs
a. OE RX-8 front hub (Mazda part # F189-33-04X) may be substituted in place of the OE Miata 2006-2015 front hub.
b. Mazda Motorsports’ competition RX-8 rear hub upgrade kit (part # 0000-04-5811-KT) may be substituted in place of the OE MX-
5 rear hubs; this unmodified kit must be used in its entirety.
c. OE RX-8 rear uprights, bearings, hubs, and hybrid axel may be used in place of OE MX-5 parts.
14. Brakes
a. OE brake rotors must be used and adhere to the specifications below in Table 15.
Table 15: Brake Rotor Dimensions
Location Diameter Notes
Front 290mm (11.4”) Vented
Rear 280mm (11.0”) Solid
Front backing plates/dirt shields may be removed.
(see see red arrow in diagram below)
b. Rear backing plates/dirt shields may be removed.
(see red arrow in diagram below)
c. Brake lines may be replaced with competition braided steel lines; option: Mazda Motorsports’ part # 0000-03-5212.
d. The Factory ABS system must remain intact, unmodified, and in full working order.
e. Brake slider pin may be used in either/both front location B25D-33-694. (This prevents a stuck sliding caliper due to the rubber
grommet)
f. Parking brake mechanisms and actuating components may be removed.
g. Brake fluid is unrestricted.
h. Mazda Motorsports’ competition brake duct kit (part # 0000-03-5301) is permitted.
i. The forward vertical inner fender panels may be modified to fit the brake kit hose to the fog light openings but may not be
modified to serve any additional purpose.
j. Mazda Motorsports’ competition brake pads are required; see eligible brake pad compounds in Table 16. No other brake pads
are permitted.
Table 16: Brake Pad part numbers
Pad Style Mazda Part # Notes
Front Pad 0000-03-5104-SP RST-3 compound
Rear Pad 0000-03-5116-29 RSL-29 compound
15. Wheels
The following unmodified wheel options below in Table 17 are permitted for use.
Table 17: WHEELS
Description Color Mazda Part #
17x7” OE Wheel Gun Metallic 99656-47070
17x7” OE Wheel Silver 99656-77070
Mazda Motorsports’ Competition MX-5 Wheel Gun Metallic 0000-04-5706-GM
Mazda Motorsports’ Competition MX-5 Wheel Silver 0000-04-5706-SL
a. Wheels may be painted.
b. Aftermarket (any) wheel studs and lug nuts are permitted., provided that a minimum of two he threads must protrude
beyond the lug nut with the wheel installed with a minimum of two (2) full threads showing; Wheel studs may not be gun
drilled.
c. Wheel spacers are not permitted.
16. Tires
a. Dry tires: Toyo RR P235/40/ZR17
b. Wet tires: Toyo RA1 P235/40/ZR17.
17. Electrical Equipment
a. OE ignition coils (Mazda part # L3G2-18-100B) are required; no modification is permitted.
b. Mazda’s competition spark plugs (part # 0000-10-R7IX-11) are required; no modification is permitted.
c. The crankshaft position sensor and crankshaft pulley relationship must be as specified in the 2006- 2015 MX-5 Factory Service Manual.
d. One of the two OE alternators (Mazda part # LF9H-18-300R-OA, L3P9-18-300D) is required; no modification is permitted.
e. The alternator must not be externally regulated or disabled in any way other than by the OE
production ECU/wiring circuit and master kill switch.
f. The electronic control module (ECM) control circuit for alternator charging must be OE - unmodified and operational.
g. One of the two OE alternator drive pulley part # AJ51-18-W10 (60mm), Part# L813-18- W11(55mm) is required; no modification
is permitted.
h. All sensors related to engine operating parameters must be used and must be stock, unmodi- fied Mazda parts for the correct year
of the vehicle on which they are installed.
i. Any and all sensors and their respective locations, mounts, and wiring harness leads may not be altered except as elsewhere in this
rule set. e Spec-MX-5 rules.
j. Any sensors required for non-OE gauges must be in addition to the Mazda sensors.
k. All alternate gauge and sensors must have independent wiring. Splicing, tapping, or altering
of the factory engine wiring harnesses is prohibited with the exception of adding an
aftermarket tachom- eter/shift light as follows:
1. It is permitted to splice into the yellow wire with the black stripe (pin 2BA - Ignition
Coil 1 control circuit) in the engine harness to obtain the tachometer signal for an
aftermarket tachometer or shift light.
2. Splicing must be done within 5” of the ECU.
l. Data acquisition’s sensor(s) may be added, provided they do not require splicing or
alteration to the factory engine wiring harness.
m. Batteries
1. Batteries may be replaced with those of an alternate manufacturer, provided they are of
similar amp-hour capacity, and size, including lead acid or AGM.; lLithium batteries are not
permitted.
2. Batteries must weigh no less than 18.0lb and no more than 35.0lb
3. Additional battery hold-down devices are recommended.
4. Battery MUST be moved from the original location to the passenger side
in the upper trunk area in front of the tail lamp. This will require the use
of a bulkhead that separates the driver / passenger compartment
completely from the trunk and the battery location. See section 5.I for
reference.
18. Roll Cage
a. Roll cage must adhere to SCCA’s current GCR Section 9.4 for Touring 4 cars; with the following exceptions:
1. One tube not to exceed 1.75” in diameter may be added which extends from the door bars to the rocker panel on each side.
The landing plate for this tube can be no longer than 5” in length. The landing plates must be centered between the front
and rear landing plates for the lower NASCAR or X brace bar.
2. Main hoop mounting plates may be on multiple planes; however, they must not be greater than 19” on any side.
b. Playboy MX-5 Cup car cages manufactured by Racing Cages, Inc. with the official serial number plate on the main hoop are
allowed to retain the lower door bar and two 3” attachment points to the rocker panel on both the driver’s side and passenger
side. No additional seam welding or lengthening of the original attachment points is allowed.
19. Safety
a. An electrical master (“kill”) switch is required. See current GCR Section 9.3 Master Switch.
b. Vehicle must be equipped with a driver’s restraint system meeting the specifications of current GCR Section 9.3 Drivers
Restraint System.
c. Installation of a fire extinguisher or fire system is required. See current GCR 9.3 Fire System.
d. Vehicle must have a driver’s side window safety net complying with current GCR Section 9.3 Window Safety Nets. Nets must be
mounted to provide protection in the event the driver’s door opens.
20. Data
Acquisition
1 A technical evaluation process for cars is available from the Series. Part of this process is the required download of AiM Data files after
each timed session (Qualifying 1 & 2, Races 1 & 2). Within 30 minutes of each timed session end, all Series Competitors MUST send
the AiM Data file (.XRK) for all timed laps of that session to the secure email address (data@specmx-5.com), where data will be
reviewed by AiM directly. Failure to adhere to this guideline from the Series, or having non- functioning data, may be grounds for
penalty or disqualification by the Series.
a. Vehicle must be equipped with current generation AiM data acquisition system (configurable in Race Studio 3) that can provide
on track data to AiM race studio 3. The data acquisition system may only read the OBDII/ECU data stream. It is not permitted
to alter/manipulate data to and from the ECU. The AiM system may be utilized to trigger a switch I.E., cooling fans or diff cooler
pumps but must be wired via a separate analog circuit.
Refer to Section 17: Electrical Equipment above for installation requirements.
b. The connection at the OBDII port for the AiM system may be made in either one of two ways:
1. Through a dedicated OBDII AiM adaptor.
2. By direct wiring to the back of the OBDII port within 3” of the ODBII connector.
c. Fuel pressure datalogging is required.
d. Oil pressure datalogging is required.
e. All cars must run the latest AIM Data Logger Spec MX-5 ECU Protocol
21. Mandatory
Video
Camera
Cars running in Spec MX-5 must have a functioning video recorder/camera during all qualifying and race sessions as described in 9.3.11.
Upon request by an SCCA official, competitors must provide their video recording/data, which may be used by the SCCA for any
purpose including but not limited to rule enforcement and marketing. Failure to comply with a video request from an official, or
having a non-functioning video recorder/camera ~~may~~ will be grounds for penalty or disqualification.
22. Parts
Confiscation
a. Tech officials may confiscate competitors’ parts for the purpose of verification of tech compliance.
23. Penalties Clarification – Non-Compliant Parts
Level Infraction Penalty
1 Non-compliant modification to any of the spec
parts, engine components, ECU/Elec- tronics or
modification to the chassis.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 12 months following the suspension.
A level 1 infraction carries a $1,000 fine.
2
Non-compliant modification to the suspen- sion or
drivetrain outside of level one infrac- tions: engine,
fuel system, charging system, exhaust, and intake
system.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 6 months following the suspension.
A level 2 infraction carries a $500 fine.
3 Use of an unauthorized or non-compliant part,
engine component, ECU/Electronics or chassis or
chassis part.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 12 months following the suspension.
A level 3 infraction carries a $1,000 fine
4
Non-compliance (non-modification such as
incorrect part)Use of an unauthorized or non-
compliant for any of the suspension or drive- train
part or component outside of level one infractions:
engine, fuel system, charging system, exhaust, and
intake system.
May suspend the driver (i.e. suspend) of the non-
compliant Spec MX-5 from competing in SCCA
events for the 6 months following the suspension.
A level 4 infraction carries a $500 fine

2024-09-01 SM Committee) OE versus OEM Definitons

#36608 from Spec Mazda (SM/SMX · Rule change · TB 24-09 (2024-09 Fastrack)

wordingSMX Mazda MX-5 OE versus OEM definitions clarified in GCR section 9.1.7.1; wording change only.

As printed in Fastrack

In GCR, Replace Section 9.1.7.1 Spec MX-5 (SMX) with the attached:

2024-09-01 SM Committee) Shifter Bushing

#36611 from Spec Mazda (SM/SMX · Rule change · TB 24-09 (2024-09 Fastrack)

addedSM and SMX now allow an alternate shifter bushing at the bottom of the shift lever.

As printed in Fastrack

In section 9.1.7.1.D.6.3., add the following:
"k. Alternate shifter bushing located at the bottom of the shift lever is allowed."

2024-09-01 AS Mustang transmission ratios

#36662 from American Sedan Committee · Rule change · TB 24-09 (2024-09 Fastrack)

addedAS Mustang GT 05-14 Restricted Prep and 2018- gain alternate transmission ratio options.

As printed in Fastrack

In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Notes as follows:
"Alternate transmission Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68.”
In AS Spec Lines, Ford Mustang GT 5.0L (2018-), add to Notes as follows:
"Alternate transmission Ratios 3.24, 2.10, 1.42, 1.00, 0.81, .062."

Applies to Ford Mustang GT on this page: Michael Kamalian, Gregory Eaton, James Jost

2024-10-01 FP Errors/emissions Honda Civic/CRX

#36700 from Martin Burk · Rule change · TB 24-10 (2024-10 Fastrack)

faster · engineFP Honda CRX/CRX Si 84-87 block material changes from iron to aluminium.

As printed in Fastrack

In FP Spec Lines, Honda CRX / CRX Si (84-87), change Block Mat'l as follows:
"~~Iron~~ Alum"

2024-11-01 FP 1275 HP Spridget Level 2 Only

#36518 from Darryl Saylor · Rule change · TB 24-09 (2024-09 Fastrack)

faster · engineHP 1275 Spridget compression ratio raised to 12.0:1; 1098cc also raised to 12.0:1.

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1275cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"
In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1098cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"

2024-12-01 SM E&O SMX Regs 9.1.7.1.D.5.u-.w

#37070 from Greg Amy · Rule change · TB 24-12 (2024-12 Fastrack)

wordingSMX OE instrument cluster must stay unmodified and connected; aftermarket dash allowed if wiring only re-routed; alternate gauges now permitted; foot pedal comfort mods allowed without relocation.

As printed in Fastrack

In GCR, Section 9.1.7.D.5.u-w, change as follows:
"u. ~~Alternate guages and instuments may be added.~~ The ~~original~~ OE instrument cluster must remain unmodified, connected and
functional. However, it may be relocated to allow the mounting of an aftermarket dash such as an AIM. The wiring to relocated
the dash may not be cut or extended, it may only be re-routed. The remainder of teh dashboard or panel must remain intact.
v. Alternate gauges and instuments may be added.
w. Modifications may be made to the foot pedals to improve the comfort and accessibility to the driver; relocation of mounting
points is not permitted.
1. Dead pedal/footrest and heel stop may be added.
~~w. Instrument clusters must be unmodified parts.~~"

2025-01-01 AS Increase Coyote Engine Restrictor to 80mm

#36177 from Gregory Eaton · Rule change · TB 25-01 (2025-01 Fastrack)

faster · engineAS Ford Mustang and Cobra Coyote engine restrictor increases to 80mm from 67mm or 64mm.

As printed in Fastrack

In AS Spec Lines, add to Notes as follows:
Ford mustang (GT 05-14): "Gen 1- 67mm Gen 2-64mm"
Ford mustang (GT 05-14): "Gen 1- 67mm"
Ford mustang (GT 15-17): "Gen 1- 67mm"
Ford mustang (GT 94-04): "Gen 1- 67mm Gen 2-64mm"
Ford mustang cobra & Cobra R Mercury Capri (79-93) (79-86): "Gen 1- 67mm Gen 2-64mm"

2025-01-01 AS Performance Pack for 2015+ Mustang

#36867 from Michael Kamalian · Rule change · TB 25-01 (2025-01 Fastrack)

faster · engineAS Mustang GT 05-14 Restricted loses 300 lbs engine; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively.

As printed in Fastrack

In AS Spec Lines, Ford Mustang Coupe GT (05-14) Restricted Prep., change Notes as follows:
"The 4.6L engine assembly has a weight reduction of 300 lbs. 5.0L/6spd engine/trans: track pack front and rear spoiler allowed."
In AS Spec Lines, Ford Mustang Coupe GT (05-14) with Restricted Prep. engine, change Notes as follows:
"Max. Wheel Size: Dia.18.0 inches. Stock brakes or alternate Ford 14” Brembo Brake (Ford Racing Kit #M-2300-S) and full prep
brake package may be used. Either engine may be used. ~~1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l~~
~~Coyote 15-17 61mm FPR~~ Cold Air Intake allowed Charge Motion Control Valves can be blocked off and removed for firewall
clearance Allow Cold Air Intake Tremec Magnum transmission may be used P/N- TUKT16901. Full Prep Transmissions rule
package may also be used. Max compression ratio, 11.2:1 track pack front and rear spoiler allowed. Alternate transmission
Ratios 3.66, 2.43, 1.69, 1.32, 1.00, .68."
In AS Spec Lines, Ford Mustang GT 5.0l (15-17) Restricted Preparation, change Notes as follows:
"Max. Wheel Size: Dia. 18.0 inches. Stock brakes or alternate Ford Brembo Brake caliper (Ford Racing Kit #M-2300-S) may be
used. ~~61mm flat plate restrictor required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch~~
~~measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation~~
~~of a safety fuel cell~~. 11” wide wheels can be used until 3/1/25. Performance pack front and rear spoiler, body kit allowed."
In AS Spec Lines, Ford Mustang GT 5.0L (2018-), change Notes as follows:
"Package Brembo front BBK and 380mm rotors permitted (Ford PN M-2300-V) at no weight penalty. ~~60mm flat plate restrictor~~
~~required.~~ 2014 Mustang GT exhaust manifolds permitted. Ford Racing oil pan #M-6675-M50BR permitted. ~~Alternate~~
~~transmission Ratios 3.24, 2.10, 1.42, 1.00, 0.81, .062.~~ Performance pack front and rear spoiler, body kit allowed."

Applies to Ford Mustang GT on this page: Michael Kamalian, Gregory Eaton, James Jost

2025-01-01 FP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line

#37119 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

faster · weightEP BMW 325i/is E30 84-91 weight reduced to 2150 lbs base, 2204 lbs with turbo, 2258 lbs supercharged.

As printed in Fastrack

In EP SPEC LINES, BMW 325i/is (E30) (84-91), change Weight as follows:
"~~2200~~ 2150
*~~2255~~ 2204
**~~2310~~ 2258"

2025-01-01 AS Gear Ratios

#37131 from Timothy White · Rule change · TB 25-01 (2025-01 Fastrack)

addedAS class: multiple American muscle cars gain additional allowed gear ratio options across model years and prep levels.

As printed in Fastrack

In AS Spec Lines, change Gear Ratios as follows:
Cadillac CTS-V (04-07):
"2.97, 2.07, 1.43,1.00, 0.84,0.56 or 3.01, 2.07, 1.43, 1.0, .84, .57 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00"
Chevrolet Camaro, Pontiac Firebird (70-81), Full Prep:
"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61, or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00"
Chevrolet Camaro, Pontiac Firebird (70-81), Restricted Prep.:
"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61, or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00"
Chevrolet/Pontiac Camaro & Firebird (82-92) Full Prep:
"3.42, 2.28, 1.45, 1.00 or 2.95, 1.94, 1.34, 1.00, 0.73 or 3.35, 1.93, 1.29, 1.00, 0.61 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33,
1.00"
Chevrolet/Pontiac Camaro & Firebird (93-02) Full Prep:
"3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00,0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00,
0.68 or 2.20,1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81"
Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted prep:
"2.97, 2.07, 1.43, 1.00, 0.80, 0.62 or 3.36, 2.07, 1.35, 1.00, .80, .62 or 2.66, 1.78, 1.30, 1.00, 0.74, 0.50 or 2.88, 1.91, 1.33, 1.00 or
2.20, 1.64,1.28,1.00"
Chevrolet Camaro SS (V8) (10-15) Restricted Prep:
"3.01, 2.07, 1.43, 1.0, .84, .57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Chevrolet Camaro (10-15) Full Prep:
"3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00, 0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00,
0.68 or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81"
Chevrolet Camaro (16-) Full Prep:
"3.42, 2.28, 1.45,1.00 or 2.95, 1.94,1.34, 1.00, 0.73or 3.35, 1.93,1.29, 1.00,0. 61 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00,
0.68 or 2.20, 1.64,1.28,1.00 or 2.87,1.89,1.28,1.00,.81"
Chevrolet Camaro, 1LE (16-):
"2.66,1.78,1.30, 0.74,.50 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Dodge Challenger (08-20) Restricted Preparation 5.7L, 6.1L, or 6.4L V8 (Iron block, Aluminum heads), 2 valves/cylinder:
"2.97, 2.1, 1.46, 1.00, 0.74, 0.50 or 2.26, 1.58, 1.19, 1.00, 0.77, 0.63 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) Full Prep:
"3.07, 1.72, 1.00, 0.70 or 2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68 or 2.87 1.89 1.28 1.00 0.81"
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine:
"2.95, 1.94, 1.34,1.00, 0.63 or 3.35,1.99,1.33, 1.00, 0.69 or 2.88, 1.91, 1.33, 1.00 or 3.27,1.98, 1.34, 1.00, 0.68, 3.66, 2.43, 1.69,
1.32, 1.00, .68. or 2.87,1.89,1.28,1.00,.81"
Ford Mustang Including Cobra 94-04 Full Prep:
"3.07, 1.72, 1.00, 0.70 or 2.95, 1.94, 1.34, 1.00, 0.63 or 3.35, 1.99, 1.33, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34,
1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 or 2.20, 1.64,1.28,1.00 or 2.87 1.89 1.28 1.00 0.81"
Ford Mustang Cobra and GT 94-95 (Restricted Prep):
"3.35, 1.99, 1.33, 1.00, 0.68 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang including Cobra 96-04 (Restricted Prep) 4.6L two and four valve motor:
"3.35, 1.99, 1.33, 1.00, 0.68 or 3.27, 1.98, 1.34, 1.00, 0.67 or 3.37, 1.99, 1.33, 1.00, 0.68 or 3.38, 2.00, 1.32, 1.00, 0.68 or 2.88,
1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang GT (05-14) Full Prep:
"3.38, 2.00, 1.32, 1.00, 0.68 or 3.66, 2.43, 1.69,1.32, 1.00, 0.65 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang GT 5.0l (15-17) Restricted Preparation:
"3.66, 2.43, 1.69,1.32, 1.00, .65 or 4.69, 2.98,2.14, 1.76,1.52, 1.27,1.00, 0.85, 0.68, 0.63, or 3.24, 2.10, 1.42, 1.00, 0.81, .062. or
2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Ford Mustang GT 5.0L (2018-) Restricted Preparation:
"2.97, 2.07, 1.43, 1.00, 0.84, 0.57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"
Pontiac GTO (04-06) Restricted Prep.
"2.97, 2.07, 1.43, 1.00, 0.84, 0.57 or 2.88, 1.91, 1.33, 1.00 or 2.20, 1.64,1.28,1.00"

2025-01-01 AS ECU specs for LS engine

#37208 from Gary Mathews · Rule change · TB 25-01 (2025-01 Fastrack)

added · engineAS LS-engine cars gain ECU freedom: CTS-V, Camaro, Firebird (70–02) and Camaro SS may use any ECM.

As printed in Fastrack

In AS SPEC LINES, Cadillac CTS-V (04-07) Restricted Prep., change Notes as follows:
"Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the
stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Tremec TR6060
Transmission with 3.0 1, 2.07, 1.43, 1.0, .84, .57 ratios permitted. 11” wide wheels can be used until 3/1/25. Any ECM may be
used."
In AS SPEC LINES, Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep ., add to Notes as follows:
"Any ECM may be used."
In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V-8 LS1, add to Notes as follows:
"Any ECM may be used."
In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep.5.7L V-8 LT1, add to Notes as follows:
"Any ECM may be used."
In AS SPEC LINES, Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep. 5.7L V-8 LT1; 98-02 , change Notes as follows:
"5.7L LS1:
GM Performance Parts camshaft Kit P/N-19355738 is permitted. Cylinder Bore, 99 mm; Stroke, 92 mm; Intake Valve Diameter,
50.8; Exhaust Valve Diameter, 39.4 mm; Throttle Body Bore, 75 mm; SLP Intake Lid (SLP part number 21044 (98-99) and 21045
(00-02)) is permitted.
~~Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the~~
~~stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell.~~
1-3/4 headers allowed. For the LS1connecting rods Callies P/NCSC6100DS6A2AH, Scat rods P/N2-1CR6100-944, GM performance
rods P/N12649190. Any ECM may be used."
In AS SPEC LINES, Chevrolet Camaro SS (V8) (10-15) Restricted Prep., add to Notes as follows:
"Any ECM may be used."

Applies to Chevrolet Camaro Z-28 on this page: Phillip Waters

2025-01-01 FP Fix Error in Spridget Spec Line

#37437 from Jason Stine · Rule change · TB 25-01 (2025-01 Fastrack)

wordingFP Sprite and Midget 1275cc and 1500cc bore, stroke, displacement, and valve specifications corrected to factory dimensions.

As printed in Fastrack

In FP SPEC LINES, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change the following:
1275cc:
Bore x Stroke: "~~68.1x78.4 (2.68x3.09)~~ 70.6x81.3 (2.78x3.20)"
Displacement: "~~(77.78)~~ 1275"
Valves IN & EX: ~~"(I) 32.1/(1.26) (E) 28.4/(1.12)~~ (I) 33.3/(1.31) (E) 29.5/(1.16)"
1500cc:
Bore x Stroke: "~~1.1x84.3~~ 73.7x87.4 (2.90x3.44)"
Displacement: "~~1491 (90.95)~~ 1493"
Valves IN & EX: "(I) 36.6/(1.44) (E) ~~28.7~~ 29.7/(1.17)"

2025-01-01 FP Create ruleset that allows GTL cars to run in FP

#37485 from Club Racing Board · Rule change · TB 25-01 (2025-01 Fastrack)

addedF Production now permits GT-Lite cars meeting Appendix N specs to compete, governed by Appendix N not PCS 9.1.5.

As printed in Fastrack

“~~(Effective January 1, 2026)~~ (Effective January 1, 2025)." Any GT-Lite (GTL) car meeting all of the requirements of Appendix N
GT-LITE CATEGORY SPECIFICATIONS for inclusion into F PRODUCTION" may compete in the F-Production class. For GTL cars
competing in FP, the level of preparation and modifications will be determined by Appendix N and not by PCS 9.1.5.”

2025-02-21 FP Effective date for Jan 2025 GCR updates

#37654 from Doug Piner · Rule change · TB 25-02 (2025-02 Fastrack)

slower · inductionEP BMW models now require flat plate intake restrictors: Z3 2.5L 52mm, Z3 2.8L 55mm, 328i E36 58mm, 328i/ci E46 58mm, 325i E46 56mm, 325i E36 56mm, 325is M-Technic 56mm.

As printed in Fastrack

In EP Spec Lines, add to Notes as follows:
BMW Z3 2.5LL "(Effective 2/21/2025) 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 2/21/2025) 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Request Competition Adjustment to BMW Z3 2.5L

#37120 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

slower · inductionEP BMW Z3 2.5L, Z3 2.8L, 328i E36/E46, 325i E36/E46 intake restrictors reduced 4mm each, to 52–58mm.

As printed in Fastrack

In EP Spec Lines, change Notes as follows:
BMW Z3 2.5LL "(Effective 3/1/2025) ~~56mm~~ 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 3/1/2025) ~~59mm~~ 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 3/1/2025) ~~62mm~~ 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 3/1/2025) ~~62mm~~ 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Interpretation of Production Rules on Mirrors

#37235 from Lawrence Slivinski · Rule change · TB 25-03 (2025-03 Fastrack)

addedEP, FP, HP may use any interior or exterior mirror meeting rule 9.3.36.

As printed in Fastrack

In GCR, add new rule as Section 9.1.5.E.10.f:
"Any interior or exterior mirror(s) that meets rule 9.3.36 may be used."

2025-03-01 FP FP Class Adjustments

#37458 from Production Committee · Rule change · TB 25-01 (2025-01 Fastrack)

slower · inductionFP Acura Integra and Honda Civic models restricted from 55mm to 51mm intake; Del Sol VTEC weight raised to 2290, 2347, 2405 lbs.

As printed in Fastrack

In FP SPEC LINES, change Notes as follows:
Acura Integra (90-93): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."
Acura Integra LS (94-01): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."
Acura Integra GSR (92-93): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."
Honda Civic Si (99-00): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required.
In FP SPEC LINES, change as follows:
Honda Civic Del Sol VTEC (94-97): "
Weight: "(Effective 3/1/2025) ~~2265 *2322 **2378~~ 2290 *2347 **2405
Notes: "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Weight Reduction for Honda S2000

#37466 from Michael Unger · Rule change · TB 25-03 (2025-03 Fastrack)

faster · weightEP Honda S2000 1997cc minimum weight drops 75 lbs to 2375; 2157cc drops 60 lbs to 2450.

As printed in Fastrack

In EP, Spec Lines make the following weight changes:

A specification table follows in the original; it is not shown here.

2025-03-01 FP Mazda 1999 Miata 1.8L

#37488 from Joe Carr · Rule change · TB 25-03 (2025-03 Fastrack)

faster · weightEP Mazda MX-5 Miata 99-05 minimum weight reduced to 2100 lbs, 2153 lbs with power, 2205 lbs modified.

As printed in Fastrack

In EP Spec Lines, make the following weight change:
Mazda MX-5 /Miata (99-05):
"~~2150~~ 2100
*~~2204~~ 2153
**~~2258~~ 2205"

2025-03-01 FP Errors & Omissions

#37648 from Bryan Floyd · Rule change · TB 25-03 (2025-03 Fastrack)

addedFP Volkswagen Jetta Mark IV 4dr FWD added to GTL-FP Cars classification with 98.2 in wheelbase.

As printed in Fastrack

In FP Spec Lines, Appendix N, GTL-FP Cars - Volkswagen, classify Jetta Mark - IV as follows:
GTL-FP Cars - VOLKSWAGEN
Model Years Body Style Drive-line Wheelbase (in) Notes
Jetta Mark - IV 4dr FWD 98.2

2025-03-01 FP GTL/FP consolidation 2025 Rules

#37659 from James Gregorius · Rule change · TB 25-03 (2025-03 Fastrack)

added · inductionFP adds optional induction chokes as alternative to SIR, same size as listed restrictor.

As printed in Fastrack

In FP Spec Lines, Appendix N: L.9, Fuel Injection System, add the following:
"As an option, induction system “Chokes” may be used where a SIR is required. Said chokes shall be fitted to each barrel of
carburetor/throttle body and all airflow into engine must pass through them. Choke size will be the same as listed SIR unless
noted."

2025-03-01 AS Race memo

#37902 from American Sedan Committee · Rule change · TB 25-03 (2025-03 Fastrack)

wordingAS removes 'Any ECM maybe used' note from five Cadillac and Chevrolet/Pontiac V8 Restricted Prep models.

As printed in Fastrack

In AS Spec Lines, change Notes as follows:
Cadillac CTS-V (04-07) Restricted Prep. 6.0L V8 (Aluminum block, Aluminum heads), LS2, 2 valves/cylinder:
"~~Any ECM maybe used.~~"
Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep. 6.2L V8 (Aluminum Block, Aluminum Heads), 2 valves per cylinder:
"~~Any ECM maybe used.~~"
Chevrolet/Pontiac Camaro & Firebird (82-92)s 5.7L V-8 LS1 (Aluminum Block, Aluminum Heads) 2 valves per cylinder:
"~~Any ECM maybe used.~~"
Chevrolet/Pontiac Camaro & Firebird (93-02):
"~~Any ECM maybe used.~~"
Chevrolet Camaro SS (V8) (10-15) Restricted Prep. 6.2L V8 (Aluminum Block, Aluminum Heads), 2 valves per cylinder:
"~~Any ECM maybe used.~~"

Super Tour Mar 2025 → Super Tour Mar 2026 2025-03-07 to 2026-03-06

2025-04-01 AS Flotek Head Plunge Cut Inconsistencies

#37502 from Pamela Richardson · Rule change · TB 25-04 (2025-04 Fastrack)

wordingAS Flotek head value seat cutting dimensions figure updated for consistency.

As printed in Fastrack

In GCR, Section 9.1.6., replace Figure 1 Value Seat Cutting Dimensions with the following:

2025-04-01 AS Notes clean up

#37693 from American Sedan Committee · Rule change · TB 25-04 (2025-04 Fastrack)

wordingAS class notes cleaned: fuel cell and ECM specifications removed from multiple Camaro, Firebird, Challenger and Mustang variants.

As printed in Fastrack

In AS Spec Lines, change/add to Notes as follows:
Cadillac CTS-V (04-07):
"~~Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the~~
~~stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used.~~ The
Drive Shaft Shop, Axle shaft part #'s 510220/510221 permitted."
Chevrolet Camaro, Pontiac Firebird (70-81) Full Prep:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #s: 14101081, 14014416 Port Volume (Max.): 081~~
~~casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb. weight reduction. Edelbrock Cylinder Head Part~~
~~#s 608979, 608879.~~"
Chevrolet Camaro, Pontiac Firebird (70-81) Restricted Prep.:
"~~Any ECM maybe used.~~"
Chevrolet/Pontiac Camaro & Firebird (82-92) Full Prep.:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #s: 14101081, 14014416 Port Volume (Max.): 081~~
~~cast¬ing: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb weight reduction. Edelbrock Cylinder Head Part~~
~~#s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s 19300955,~~
~~19300956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed between intake~~
~~manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side of the restrictor.~~
~~All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98,~~
~~1.34, 1.00, 0.68 are permitted. Flo Tek Head part #102-500 are permitted.~~"
Chevrolet/Pontiac Camaro & Firebird (82-92) Restricted prep engine:
"~~Any ECM maybe used.~~"
Chevrolet/Pontiac Camaro & Firebird (93-02) Full Prep:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.):~~
~~081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 250 lb weight reduction. Edelbrock Cylinder Head~~
~~Part #’s 608979, 608879 are permitted. For regional competition only, unmodified GM Performance cylinder head part #s~~
~~19300955, 19300956 may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186 installed~~
~~between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on each side~~
~~of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00~~
~~or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch~~
~~measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with~~
~~installation of a safety fuel cell. Flo Tek Head part #102-500 are permitted.~~"
Chevrolet/Pontiac Camaro & Firebird (93-02) Restricted Prep:
"~~Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the~~
~~stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used.~~"
Chevrolet Camaro SS (V8) (10-15) Restricted Prep:
"~~Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is taken from the perimeter of the~~
~~stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Any ECM maybe used.~~"
Chevrolet Camaro (10-15) Full Prep:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.):~~
~~081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head~~
~~Part #’s 608979, 608879 are permitted. Alternate gear ratio sets 2.88, 1.91, 1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are~~
~~permitted. Fuel cells must be located within 24 inches of the standard tank. The 24-inch measurement is taken from the~~
~~perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel cell. Flo Tek~~
~~Head part #102-500 are permitted. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement is~~
~~taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety fuel~~
~~cell.~~"
Chevrolet Camaro (16-) Full Prep:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #’s: 14101081, 14014416; Port Volume (Max.):~~
~~081 casting: 170.00 cc IN/65.00 EX; 416 Casting 168.00cc IN/60.00 EX with a 200 lb weight reduction. Edelbrock Cylinder Head~~
~~Part #’s 608979, 608879 are permitted, Flo Tek Head part #102-500 are permitted.~~"
Chevrolet Camaro, 1LE (16-):
"~~60mm flat plate restrictor required. Any ECM maybe used.~~"
Dodge Challenger (08-20) Restricted Preparation:
"~~80mm flat plate restrictor is required on the 6.4L engine. Fuel cells must be located within 24 inches of the standard tank. The~~
~~24 inch measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with~~
~~installation of a safety fuel cell.~~"
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri (79-86) Full Prep:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA~~
~~(GT- 40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 250 lb weight reduction. Edelbrock Cylinder~~
~~Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s~~
~~M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186~~
~~installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on~~
~~each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91,~~
~~1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Part # 203-500 are permitted.~~"
Ford Mustang Incl. Cobra & Cobra R (79-93) and Mercury Capri(79-86) with Restricted Prep Engine:
"~~62mm flat plate restrictor is required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch~~
~~measurement is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with~~
~~installation of a safety fuel cell.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang Including Cobra 94-04 Full Prep:
"~~Engine built to A/S Build Sheet specifications with the following: Head Casting #s: F3ZE AA (GT40), F1ZE-AA (GT-40), F77E-AA~~
~~(GT- 40P), Port Volume (Max.): 143.00cc IN/54.00cc EX (GT-40 & GT-40P) with a 250 lb weight reduction. Edelbrock Cylinder~~
~~Head Part #s 602579, 602479 are permitted. For regional competition only, unmodified Ford Performance cylinder head part #s~~
~~M-6049-Z304DA7, M-6049-Z304D may be used with Allstar restrictor plate part# ALL26180 and 1.250 inserts part# ALL26186~~
~~installed between intake manifold and insulator. Gaskets may be used (each gasket can be no thicker than .125 inches), one on~~
~~each side of the restrictor. All intake air must pass through the inserts of the restrictor plate. Alternate gear ratio sets 2.88, 1.91,~~
~~1.33, 1.00 or 3.27, 1.98, 1.34, 1.00, 0.68 are permitted. Flo Tek Part # 203-500 are permitted.~~"
Ford Mustang GT (94-04) with Restricted Prep Engine:
"MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang Cobra and GT 94-95(Restricted Prep):
"~~1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,~~
~~2.43, 1.69, 1.32, 1.00, .68.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang including Cobra 96-04 (Restricted Prep):
"~~1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,~~
~~2.43, 1.69, 1.32, 1.00, .68.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang Coupe GT (05-14) Restricted Prep.:
"~~1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,~~
~~2.43, 1.69, 1.32, 1.00, .68.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted. MT82 6 speed is permitted."
Ford Mustang GT (05-14) with Restricted Prep Engine:
"~~1st Generation 5.0l Coyote 11-14 62mm FPR 2nd Generation 5.0l Coyote 15-17 61mm FPR Alternate transmission Ratios 3.66,~~
~~2.43, 1.69, 1.32, 1.00, .68.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted. MT82 6 speed is permitted."
Ford Mustang GT 5.0l (15-17) Restricted Preparation:
"~~61mm flat plate restrictor required. Fuel cells must be located within 24 inches of the standard tank. The 24 inch measurement~~
~~is taken from the perimeter of the stock and alternative fuel cell. Fuel filler location is unrestricted with installation of a safety~~
~~fuel cell.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Ford Mustang GT 5.0L (2018-):
"~~60mm flat plate restrictor required.~~ MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."

2025-04-01 FP Request for Classification of Chevrolet Spark

#37755 from Kristian Smith · Rule change · TB 25-04 (2025-04 Fastrack)

addedChevrolet Spark 16-22 classified in HP Pre at 1850 lbs base, 1896 lbs modified, 1943 lbs.

As printed in Fastrack

In HP Spec Lines, classify the Chevrolet Spark (16-22):

A specification table follows in the original; it is not shown here.

2025-04-01 FP Request to Lower Ford Festiva Minimum Weight to 1600 LBS

#37939 from Doug DeRonne · Rule change · TB 25-04 (2025-04 Fastrack)

faster · weightHP Ford Festiva 88-93 minimum weight lowered to 1600 lbs, competition weight to 1640, prepared weight to 1680; compression ratio raised to 11.0:1.

As printed in Fastrack

In HP Spec Lines "Ford Festiva (88-93)" change as follows:
Weight:
"~~1700~~ 1600
*~~1743~~ 1640
**~~1785~~ 1680"
Notes:
"Compression ratio limited to ~~10.5~~ 11.0:1. Valve lift limited to .450”."

2025-05-01 SM Clarify Tire Marking Regs

#38005 from Greg Amy · Rule change · TB 25-05 (2025-05 Fastrack)

wordingSM tire marking rules clarified: one Hoosier SM 7.5 P205/50/ZR17 set per Super Tour weekend, impound after first dry session, damaged tires may be replaced with used tires only.

As printed in Fastrack

In GCR Section 9.1.7.C.1.6.c., change as follows:
"1. ~~A mandatory impound for all SMX competitors will occur after the first dry qualifying or race session. All tires will be marked~~
~~for the remainder of the race weekend. It is the competitor’s responsibility to report to impound and ensure their tires are~~
~~marked prior to leaving impound.~~ SM cars are limited to one set of Hoosier SM 7.5 P205/50/ZR17 per Hoosier Super Tour event
weekend for all dry qualifying and race sessions. This limitation does not include testing or practice sessions. Approved rain tires
will not be required to be marked.
2. ~~A mandatory impound for all SM competitors is required after the first dry qualifying or race (if rain in qualifying) session. It is~~
~~the competitor’sresponsibility to ensure their tires are marked prior to going on track for the next session.~~ A mandatory impound
for all SM competitors will occur after the first dry qualifying or race session. All tires will be marked for the remainder of the
race weekend. It is the competitor’s responsibility to report to impound and ensure their tires are marked prior to leaving
impound.
3. ~~If a competitor damages a tire or wheel, and there is a safety concern, the competitor must find the Hoosier Super Tour Series~~
~~Tech Chief or SM CCC, if assigned, for inspection. At the direction of the Hoosier Super Tour Series Tech Chief or SM CCC, the~~
~~competitor will be allowed to substitute alternate used tire(s) to replace the damaged tire(s). New tires are not an option as a~~
~~replacement tire for a damaged tire~~ If a competitor damages a tire or wheel and there is a safety concern, the competitor must
find the Hooseir Super Tour Series Tech Chief or SMX CCC, if assigned, for inspection. At the discretion of the Hoosier Super
Tour Series Tech Chief of SMX CCC the competitor may be allowed to substitute alternate used tires(s) to replace the damaged
tire(s). New tires are not an option as a replacement tire for a damaged tire."

2025-05-01 AS Errors and Omission

#38055 from American Sedan Committee · Rule change · TB 25-05 (2025-05 Fastrack)

slower · inductionAS Ford Mustang GT 5.0L 15-17 flat plate restrictor reduces from 67mm to 64mm.

As printed in Fastrack

In AS Spec Lines, Ford Mustang GT 5.0l (15-17), Flat Plate Restrictor Size, change as follows:
"~~67mm~~ 64mm"

2025-05-01 AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO

#38197 from Jim Clark · Rule change · TB 25-05 (2025-05 Fastrack)

addedAS LS1/LS6 intakes added for 5.3L truck engine: part numbers 12561269 and 88894095.

As printed in Fastrack

In GCR, Section 9.1.6.F., add the following to Intake Part #’s:
"17113697, 19418185, 89017230, 89017363, 89017364, ~~and~~ 89017365, 12561269 and 88894095"

2025-06-01 AS Errors and Omissions

#38234 from American Sedan Committee · Rule change · TB 25-06 (2025-06 Fastrack)

addedAS Ford Mustang GT 05-14 Restricted Prep Engine gains additional gear ratio option: 3.66, 2.43, 1.69, 1.32, 1.00, .65.

As printed in Fastrack

In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Gear Ratios the following:
"or 3.66, 2.43, 1.69, 1.32, 1.00, .65"

Applies to Ford Mustang GT on this page: Michael Kamalian, Gregory Eaton, James Jost

2025-06-01 SM SMX Data Submission - Penalties

#38248 from Kathy Barnes · Rule change · TB 25-06 (2025-06 Fastrack)

addedSMX drivers must submit data acquisition files on time or face suspension and $250 fine.

As printed in Fastrack

In GCR, Section 9.1.7.1.23 add new level 5 infraction as follows:
Level: "5"
Infraction: "Failure to successfully submit (received by data@specmx-5.com) data acquisition file to data@specmx-5 per the
timeframes outlined in GCR section 9.1.7.1.20."
Penalty: "May suspend the driver (i.e. suspend) of the Spec MX-5 that failed to submit data on time or at all from competing in
SCCA events for the 3 months following the suspension.
A level 5 infraction may carry a $250.00 fine."

2025-06-01 FP Base Weight Adjustment for H-Production X1/9 Spec Lines

#38255 from Matthew Brannon · Rule change · TB 25-06 (2025-06 Fastrack)

faster · weightHP Fiat X-1/9 and Bertone 1500 minimum weights reduced to 1740 lbs, 1784 lbs, 1827 lbs; 1300 models to 1600, 1640, 1680 lbs; additional 1300 and 1500 specs to 2010, 1900 lbs.

As printed in Fastrack

In HP Spec Lines, change Weight as follows:
Fiat X-1/9 & Bertone1500: “~~1790~~ 1740 *~~1835~~ 1784 **~~1880~~ 1827”
Fiat X-1/9 1300: “~~1650~~ 1600 *~~1691~~ 1640 **~~1733~~ 1680”
Fiat X-1/9 1300: “~~2060~~ 2010”
Fiat X-1/9 1500: “~~1950~~ 1900”

2025-06-01 SM Committee) SMX Penaly Clarification updated language

#38337 from Spec Mazda (SM/SMX · Rule change · TB 25-06 (2025-06 Fastrack)

wordingSMX penalty language clarified: level 1 and 3 infractions may carry $1,000 fines, level 2 and 4 may carry $500 fines.

As printed in Fastrack

In GCR, Section 9.1.7.1.23. change as follows:
Rename as follows: "~~Penalties Clarification – Non-Compliant Parts~~ SMX Penalty Guidelines"
Change the Penalty language for level 1 to the following: "A level 1 infraction ~~carries~~ may carry a $1,000 fine."
Change the penalty language for level 2 to the following: "A level 2 infraction ~~carries~~ may carry a $500 fine."
Change the penalty language for level 3 to the following: "A level 3 infraction ~~carries~~ may carry a $1,000 fine."
Change the penalty language for level 4 to the following: "A level 4 infraction ~~carries~~ may carry a $500 fine."

2025-07-01 AS RE: Previous Letter 37695 Update

#38245 from Michael Kamalian · Rule change · TB 25-07 (2025-07 Fastrack)

faster · weightAS Ford Mustang GT 5.0 2018- minimum weight reduced to 3525 lbs.

As printed in Fastrack

In AS Spec Lines, Ford Mustang GT 5.0 (2018-), change Weight as follows:
"~~3600~~ 3525"

Applies to Ford Mustang GT on this page: Michael Kamalian

2025-07-01 FP BMW Z4 update

#38490 from Bryce McGuire · Rule change · TB 25-07 (2025-07 Fastrack)

slower · inductionEP BMW Z4 03-05 gains 52mm flat plate intake restrictor.

As printed in Fastrack

In EP Spec Lines, BMW Z4 (03-05), add to Notes the following:
“52mm Flat Plate Intake Restrictor.”

2025-07-01 FP EP Fiat 124 Spider Competition Adjustment Request

#38498 from John Baucom · Rule change · TB 25-07 (2025-07 Fastrack)

faster · weightEP Fiat 124 Spider Competition 1600 and 2000 minimum weight drops 50 lbs to 2000; carburetors now allow 36mm chokes instead of 34mm.

As printed in Fastrack

In EP Spec Lines, Fiat 124 Sport Spider 1600 & 124 Spider 2000, change as follows:
Weight: "~~2050~~ 2000"
Carburetor No. & Type: "(2) Weber 40 IDF-40IFI, (2) Solex C40P116, 34 36mm choke(s) req’d, (2) Weber 45DCOE w/ 34 36 mm
choke(s) on I.R. manifold or fuel injection."

2025-10-01 FP HP Plymouth Arrow spec omission

#38995 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

addedHP Plymouth Arrow gains 4 or 5 speed transmission option specification.

As printed in Fastrack

In HP Spec Lines, Plymouth Arrow (76-80), add the following wording to Trans. Speeds(max):
"4 or 5"

2025-10-01 FP Add Wheel Diameter to Appendix G

#39008 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

wordingAppendix G.2.3 clarifies rim width and diameter are absolute maximums; wording corrected from 'is' to 'are'.

As printed in Fastrack

In Appendix G.2.3, change as follows:
"Rim width and diameter are is absolute maximums."

2025-10-01 FP Add TB ID tolerance to general Prod rules

#39009 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

addedEP, FP, HP throttle body inside dimensions and butterfly now allow +/-.25mm tolerance from stock.

As printed in Fastrack

In GCR, Section 9.1.5.E., change as follows:
9.1.5.E.1.b.4: "The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) must remain
stock (tolerance of +/-.25mm), but the throttle body can otherwise be ported and polished."
9.1.5.E.2.b.4: "The inside dimensions of the throttle body casting/housing and all dimensions of the throttle butterfly must
remain stock (tolerance of +/-.25mm)."

2025-11-01 AS Cadillac CTS-V BOP Weight Change

#38640 from Alex Lozano · Rule change · TB 25-09 (2025-09 Fastrack)

faster · weightAS Cadillac CTS-V 04-07 Restricted Prep minimum weight drops to 3400 lbs.

As printed in Fastrack

In AS Spec Lines, Cadillac CTS-V (04-07) Restricted Prep., change Weight as follows:
"(Effective 11/1/2025) ~~3450~~ 3400"

2025-11-01 FP Please Lower Weight of 280Z

#38871 from Matthew Miller · Rule change · TB 25-09 (2025-09 Fastrack)

faster · weightEP Nissan 280Z minimum weight lowered to 2400 lbs, 2460 lbs with *, 2520 lbs with **.

As printed in Fastrack

In EP Spec Lines, Nissan 280Z, change Weight (lbs) as follows:
"(Effective 11/1/2025) ~~2560~~ 2400
*~~2624~~ 2460
**~~2688~~ 2520"

2025-11-01 FP Miata Weight Adjustment Follow Up

#38949 from Don Tucker · Rule change · TB 25-10 (2025-10 Fastrack)

faster · weightEP Mazda MX-5 1.8L 90-97 minimum weight reduced to 2125 lbs.

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 / Miata 1.8L (90-97), Effective 11/1/2025 make the following weight change:
"~~2150~~ 2125"

2025-11-01 FP Weight Break for 1098 Midget / Sprite

#38970 from Kendall Jones · Rule change · TB 25-10 (2025-10 Fastrack)

faster · weightHP Spec Lines Austin-Healey Sprite/Midget 1098cc minimum weight drops to 1550 lbs.

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite/Midget 1098cc, Effective 11/1/2025make the following weight change:
"~~1630~~ 1550"

2025-11-01 FP HP Volvo 142 spec omission

#38994 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

slower · engineHP Volvo 142 P-1800 engine gains compression ratio limit 12.0:1 and valve lift limit .425 inch.

As printed in Fastrack

In HP Spec Lines, Volvo 142/142E P-1800 Engine, Effective 11/1/2025 add the following wording to Notes:
"Comp. Ratio limited to 12.0:1. Valve lift limited to .425”."

2025-11-01 FP HP Mini DOHC 1.6

#38996 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

slower · engineHP Mini DOHC 1.6 valve lift limit drops to .390" from .450".

As printed in Fastrack

In HP Spec Lines, Mini Cooper (07-13) (includes 09-15 convertible and 12-15 Coupe), Effective 11/1/2025 make the following
changes to the Notes:
"Compression ratio limited to 11.0:1, Valve lift limited to ~~.450”~~.390"."

2025-11-01 FP 83-88 FP Scirocco Spec Line Creation

#38997 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

addedFP Scirocco 83–88 classified Prep Level 1: 1733–1803 lbs, 1715–1780 cc, iron block, aluminium head, carburetted or fuel injected.

As printed in Fastrack

In FP Spec Lines, classify Volkswagen Scirocco (83-88) as follows:

A specification table follows in the original; it is not shown here.

2025-11-01 FP Add to Rabbit description

#39019 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

wordingFP and HP Volkswagen Rabbit descriptions updated to clarify Cabriolet body style inclusion.

As printed in Fastrack

In FP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit (Includes ~~Convertible~~ Cabriolet)"
In HP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit 1588 (Includes Cabriolet)"
"Volkswagen Rabbit 1715 (Includes Cabriolet)"
"Volkswagen Rabbit 1780 (Includes Cabriolet)"

2025-11-01 FP Clean-up 9.1.5.E.7e

#39025 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

otherEP, FP, HP: rear drum-to-disc brake conversion clarified; rotors solid, diameter limited to largest front rotor permitted.

As printed in Fastrack

In GCR, Section 9.1.5.E.7., change as follows:
"e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. N~~ote that the “Brakes Std.” and “Brakes~~
~~Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear~~
~~disc brakes under this rule~~. When converting from rear drum brakes to rear disc brakes:
1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on
the vehicle’s spec line.
2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. ~~The standard and~~
~~alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock~~
~~from converting to rear disc brakes under this rule.~~
3. The “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes
as stock from converting to rear disc brakes under this rule."

2025-11-01 FP Add TB size to Ford Mustang (94-98) Spec Line

#39130 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

added · inductionEP Ford Mustang 94-98 fuel injected throttle body inside diameter set to 60.

As printed in Fastrack

In EP Spec Lines, Ford Mustang (94-98) add the following to the Fuel Injected Equipped Throttle Body Inside Diameter column:
"60"

2025-11-01 FP Correct Existing VW Scirocco Spec Line

#39140 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

removed · cars addedFP Volkswagen Scirocco: remove two weight tiers at 1733 and 1803 lbs, two engine options, and 13-inch wheel option; allow 15-inch wheels.

As printed in Fastrack

In FP Spec Lines, Volkswagen Scirocco, change spec line as follows:

A specification table follows in the original; it is not shown here.

2025-12-01 AS 1994 Mustang Spec Line Request

#39104 from Barry Borgschatz, Jr · Rule change · TB 25-12 (2025-12 Fastrack)

added · engineAS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft.

As printed in Fastrack

In AS Spec Lines, Ford Mustang GT(94-04) with Restricted Prep Engine, add to notes the following:
"Ford Motorsport #M-6250-F303 camshaft is permitted."

Applies to Ford Mustang GT on this page: Michael Kamalian, Thomas J Ellis

2025-12-01 FP TR2 Notes E&O

#39180 from Anthony Parker · Rule change · TB 25-12 (2025-12 Fastrack)

wordingEP Triumph TR2–TR4A may use 5-speed gearbox without overdrive; Weber carburetors and weight reference deleted.

As printed in Fastrack

In EP Spec Lines, Triumph TR2, 3, 3A, 4, 4A, TR4, TR4A, IRS, make the following change to the Notes:
"Front apron assembly may be made of alternate material. ~~Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990~~
~~lbs.~~ Laycock overdrive, may use 5 speed gearbox without overdrive."

2025-12-01 FP Balance of Power

#39187 from Jim Simaras · Rule change · TB 25-12 (2025-12 Fastrack)

slower · inductionEP BMW Z3 2.5L and other models get smaller restrictors, 50mm to 55mm, and Z3 2.5L weight rises 50 to 78 lbs.

As printed in Fastrack

In EP Spec Lines, make the following changes to Restrictors:
BMW Z3 2.5L: "~~52mm~~ 50mm Flat Plate Intake Restrictor"
BMW Z3 2.8L (97-00): "~~55mm~~ 53mm Flat Plate Intake Restrictor"
BMW 328i/is E36 (96-99): "~~58mm~~ 55mm Flat Plate Intake Restrictor"
BMW 328i/ci E46 (01-06): "~~58mm~~ 55mm Flat Plate Intake Restrictor"
BMW 325i/is (E46) (01-06): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
BMW 325is M-Technic (1994): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
BMW 325i/is E-36 (92-95): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
In EP Spec Lines, BMW Z3 2.5L, change Weight as follows:
"~~2500~~ 2550
*~~2563~~ 2614
**~~2625~~ 2678"

2025-12-01 FP Competition Adjustment Request

#39259 from David Strittmatter · Rule change · TB 25-12 (2025-12 Fastrack)

faster · weightFP Lancia Scorpion minimum weight cut to 1950 lbs from 2030 lbs.

As printed in Fastrack

In FP Spec Lines, Lancia Scorpion, change Weight as follows:
"~~2030~~ 1950"

2025-12-01 FP Factory Roll Bar Removal on VW Convertible

#39268 from Tim Linerud · Rule change · TB 25-12 (2025-12 Fastrack)

wordingFP VW Rabbit Convertible no longer required to remove factory roll bar.

As printed in Fastrack

In FP Spec Line, Volkswagen Rabbit (Includes Convertible), remove the following wording in Notes:
"~~Factory roll bar must be removed on Cabriolet.~~"

2025-12-01 FP FP Parity Request

#39325 from Mason Workman · Rule change · TB 25-12 (2025-12 Fastrack)

slower · weightFP Acura Integra and Honda Civic models gain 50–79 lbs minimum weight; Mazda Miata and Mercury Capri compression ratio to 11.0:1 and valve lift to .425".

As printed in Fastrack

In FP, change Weight as follows:
Acura Integra (90-93):
"~~2235~~ 2285
*~~2291~~ 2342
**~~2347~~ 2399"
Acura Integra LS (94-01):
"~~2260~~ 2310
*~~2317~~ 2368
**~~2373~~ 2426"
Acura Integra GSR (92-93):
"~~2325~~ 2375
*~~2383~~ 2434
**~~2441~~ 2494"
Honda Civic Del Sol VTEC (94-97):
"~~2290~~ 2340
*~~2347~~ 2399
**~~2378~~ 2457"
Honda Civic Si (99-00):
"~~2250~~ 2300
*~~2306~~ 2358
**~~2363~~ 2415"
FP Spec Lines, change Notes as follows:
Mazda Miata 1.6L (90-97): "Comp. Ratio limited to ~~10.0:1~~ 11.0:1, Valve lift limited to ~~.390”~~ .425"."
Mercury Capri 1.6L (91-94): "Comp. Ratio limited to ~~10.0:1~~ 11.0:1, Valve lift limited to ~~.390”~~ .425"."

2025-12-01 FP Adjust former-GTL Honda's with B/D-Series Engines

#39374 from Production Committee · Rule change · TB 25-12 (2025-12 Fastrack)

slower · weightFP Honda D15, D16, B16A, B18 engines gain 105–120 lbs minimum weight across seven configurations.

As printed in Fastrack

In GCR, Appendix N GTL inclusion into FP, Engines - HONDA, change Disp. (cc) – Weight (lbs) as follows:
"D15 – 1493cc – ~~1895~~ 2000
D15b7 – 1493cc – ~~1895~~ 2000
D16 – 1590cc – ~~1945~~ 2055
D16A – 1590cc – ~~1945~~ 2055
B16A – 1595cc – ~~1950~~ 2065
B18 – 1797cc – ~~2050~~ 2170
B18 – 1834cc – ~~2065~~ 2185"

2026-01-01 AS Restrictor Plate Change for Gen 2 Ford Coyote Engine

#39501 from American Sedan Committee · Rule change · TB 26-01 (2026-01 Fastrack)

slower · inductionAS Ford Mustang and Mercury Capri with Restricted Prep engines get 61 mm restrictor, down from 64 mm.

As printed in Fastrack

In AS Spec Lines, change Restrictor as follows:
Ford Mustang Incl. Cobra and Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine: "~~64 mm~~ 61 mm"
Ford Mustang GT (94-04) with Restricted Prep Engine: "~~64 mm~~ 61 mm"
Ford Mustang Coupe GT (05-14) Restricted Prep 5.0L/6 speed 4 valves per cylinder: "~~64 mm~~ 61 mm"
Ford Mustang GT (05-14) with Restricted Prep Engine: "~~64 mm~~ 61 mm"
Ford Mustang GT 5.0L (15-17) Restricted Preparation: "~~64 mm~~ 61 mm"

2026-02-01 FP Request Toyota 5E Series Engines

#38208 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

addedFP adds Toyota 5E 1497cc DOHC engine, 1900 lbs, 23mm restrictor, SIR fuel induction.

As printed in Fastrack

In FP Appendix N, add spec line for the Toyota 5E engine to the "Engines - TOYOTA" section:

A specification table follows in the original; it is not shown here.

2026-02-01 FP Request for Toyota 4E Series Engines

#38209 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

addedFP class adds Toyota 4E DOHC 1331 cc engine, 1900 lbs minimum weight, unrestricted fuel induction.

As printed in Fastrack

In FP Appendix N, add spec line for the Toyota 4E engine to the "Engines - TOYOTA" section:

A specification table follows in the original; it is not shown here.

2026-02-01 AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request

#39055 from Jason Smith · Rule change · TB 26-01 (2026-01 Fastrack)

addedAS GM LM7 5.3L gains Edelbrock 71187 intake manifold, MSD 6014 ignition box, Holly 4776 carb option under full prep spec line.

As printed in Fastrack

In GCR, Section 9.1.6.D.2.h.2., add the following:
"(Effective 2/1/2026) i. Weight based on full preparation chassis choice spec line for GM LM7 5.3L
Carburetor Option:
Must use the full prep 4776 holly carburetor and spacer gasket
Edelbrock Performer RPM 71187 intake manifold
MSD 6014 ignition box
(Edelbrock part # kit 7118)"

2026-02-01 FP Dual Carbs for the Fiat X1/9

#39593 from Daniel Snow · Rule change · TB 26-02 (2026-02 Fastrack)

faster · engineFP Fiat X1/9 fuel injection carburetors simplified to one 36 or 40 DCNF option; exhaust valve enlarged to 33.0/1.30.

As printed in Fastrack

In FP Spec Lines, change as follows:
Fiat X-1/9 & Bertone 1300:
"(1) Weber 32 DMTR or DATRA/100 w/32mm bores
(1) 40 DCNF w/32mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 31.3/(1.23)~~30.5/(1.20) (E) 1.23~~
Trans. Speeds: 5"
Fiat X-1/9 & Bertone:
"Fuel Injection
(1) 34 DMTR~~, (1) 36 DCNF w/34mm choke(s), or (1) 40DCNF w/34mm choke(s)~~
(1) 36 or 40 DCNF w/34mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 33.0/(1.30)
Trans. Speeds: 5 or 4"

2026-03-01 FP Correct Valve Sizes on FP Fiat x19 1300 and 1500

#39850 from DANIEL SNOW · Rule change · TB 26-03 (2026-03 Fastrack)

otherFP Fiat X-1/9 1300 and 1500 intake and exhaust valve sizes corrected to 36.3/(1.43) and 31.2-33.3/(1.23-1.31).

As printed in Fastrack

In FP Spec Lines, change Drivetrain Notes as follows:
Fiat X-1/9 & Bertone 1300:
Valve Size: ~~"(I) 35.5/(1.40) (E) 31.3/(1.23)~~ (I) 36.3/(1.43) (E) 31.2/(1.23)"
Fiat X-1/9 & Bertone:
Valve Size: ~~"(I) 35.5/(1.40) (E) 33.0/(1.30)~~ (I) 36.3/(1.43) (E) 33.3/(1.31)"

2026-03-01 FP Dual Carburetor Adjustments

#39851 from DANIEL SNOW · Rule change · TB 26-03 (2026-03 Fastrack)

faster · inductionFP Fiat X-1/9 & Bertone dual carburetors choke size increases from 28mm to 30mm on intake runner manifold.

As printed in Fastrack

In FP Spec Lines, Fiat X-1/9 & Bertone, change Drivetrain Notes as follows:
"(2) auto-type side-draft w/28 30mm choke(s) on I.R. manifold"

2026-03-01 AS Re-Organization of AS Spec lines for 2026

#39887 from American Sedan Committee · Rule change · TB 26-03 (2026-03 Fastrack)

wordingAS Spec Lines reorganized for 2026; detailed chassis, engine, weight, wheelbase, tire and brake specifications moved to main rules and engine build sheets.

As printed in Fastrack

This AS Spec Lines re-organization simplifies the Spec Lines for all drivers. This version gives the chassis information on what
engines can be put in their cars. It removes information that is now repeated in the ruleset and adds engine/weight combos as
well as wheelbase/tire size information. The Notes in the Spec Lines have been reviewed to remove information now listed in
the engine build sheets and retain information pertinent to the chassis selected. Where there is nothing in the notes, it is not an
error. It just means everything a driver needs is now in the main rules or the build sheets.
In AS Spec Lines, delete current Spec Line in its entirety as follows:

A specification table follows in the original; it is not shown here.

What the rules allowed changed as listed; this does not say what any particular car ran.

Sectors

S1 SF → IM1
S2 IM1 → IM2
S3 IM2 → SF
SPd IM2 → IM3 0.02 mi

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.