GT1 Reduce Weight for GM 275ci Carbureted V6s
#39713 from Cameron Wagner · Rule change · TB 26-03 (2026-03 Fastrack)
In GCR, Section 9.1.2.D.E.b., V-6 - up to 275 (4.5), change as follows:
"2345 2295"
BoP Lab / Drivers / Cameron Wagner
Cameron Wagner 3 letters to Fastrack
Overall · since 2018
6entries
9starts
3wins
5podiums
6top 5
P1best finish
P4avg finish
2fastest laps
1poles
2DNFs
1DNS
158laps raced
4seasons
4tracks
2classes
Runoffs · since 2018
2entries
2starts
0wins
0podiums
0top 5
P8best finish
P10avg finish
0fastest laps
0poles
0DNFs
0DNS
33laps raced
2seasons
2tracks
2classes
Super Tour · since 2018
4entries
7starts
3wins
5podiums
6top 5
P1best finish
P1.6avg finish
2fastest laps
1poles
2DNFs
1DNS
125laps raced
4seasons
2tracks
2classes
Against the front of the class, by track and class
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Portland International Raceway (1.97 mi) | STU | 13 | +1.443s (1.71%) | +0.000s (0.00%) |
| Road America · Alt (4.05 mi) | STU | 4 | +9.589s (6.50%) | +8.663s (5.92%) |
| Sonoma Raceway (2.52 mi) | STL | 7 | +6.477s (5.92%) | +3.476s (3.08%) |
| Buttonwillow Raceway Park (2.92 mi) | STL | 5 | +0.965s (0.77%) | +0.896s (0.72%) |
Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
Every session
Portland International Raceway (1.97 mi)
| Event | Date | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oregon 2025 | 2025-05-11 | Grp 5 STU GT3U T3 T4 STL Race 2 | STU | 99 | Porsche Boxster | 1/4 | 1:25.401 | 1:24.948Tom van Veen | +0.453s (0.53%) | 124.82/4 | 125.0Rylan Hazelton | -0.2 mph (-0.2%) |
| Oregon 2025 | 2025-05-11 | Grp 5 STU GT3U T3 T4 STL Qual 2 | STU | 99 | Porsche Boxster | 2/2 | 1:36.821 | 1:29.124Oscar Jackson | +7.697s (8.64%) | 119.51/2 | 119.5you | +0.0 mph (0.0%) |
| Oregon 2025 | 2025-05-10 | Grp 5 STU GT3U T3 T4 STL Race 1 | STU | 99 | Porsche Boxster | 3/4 | 1:25.691 | 1:24.248Rylan Hazelton | +1.443s (1.71%) | 124.62/4 | 127.0Rylan Hazelton | -2.3 mph (-1.8%) |
| Oregon 2025 | 2025-05-10 | Grp 5 STU GT3U T3 T4 STL Qual 1 | STU | 99 | Porsche Boxster | 3/4 | 1:26.540 | 1:23.767Rylan Hazelton | +2.773s (3.31%) | 123.33/4 | 128.4Rylan Hazelton | -5.0 mph (-3.9%) |
| Oregon 2025 | 2025-05-09 | Morning Two | STU | 99 | Porsche Boxster | 3/3 | 1:21.734 | 1:21.734you | +0.000s (0.00%) | 124.43/3 | 126.8Marc Hoover | -2.3 mph (-1.8%) |
| Super Tour May 2024 | 2024-05-12 | Grp 5 STL STU T3 T4 Race 2 | STU | 99 | Porsche Boxster | 1/1 | 1:27.496 | 1:27.496you | +0.000s (0.00%) | 124.81/1 | 124.8you | +0.0 mph (0.0%) |
| Super Tour May 2024 | 2024-05-12 | Grp 5 STL STU T3 T4 Qual 2 | STU | 99 | Porsche Boxster | 1 | ||||||
| Super Tour May 2024 | 2024-05-11 | Grp 5 STL STU T3 T4 Race 1 | STU | 99 | Porsche Boxster | 1/1 | 1:27.478 | 1:27.478you | +0.000s (0.00%) | 123.51/1 | 123.5you | +0.0 mph (0.0%) |
| Super Tour May 2024 | 2024-05-11 | Grp 5 STL STU T3 T4 Qual 1 | STU | 99 | Porsche Boxster | 1/1 | 1:25.865 | 1:25.865you | +0.000s (0.00%) | 125.21/1 | 125.2you | +0.0 mph (0.0%) |
| Super Tour May 2023 | 2023-05-14 | Grp 4 STL.STU,T2,T3,T4 Race 2 | STU | 99 | Porsche Boxster | 2/3 | 1:29.095 | 1:27.204Rylan Hazelton | +1.891s (2.17%) | 121.11/3 | 121.1you | +0.0 mph (0.0%) |
| Super Tour May 2023 | 2023-05-14 | Grp 4 STL.STU,T2,T3,T4 Qual 2 | STU | 99 | Porsche Boxster | 2/3 | 1:28.060 | 1:25.754Rylan Hazelton | +2.306s (2.69%) | 120.41/3 | 120.4you | +0.0 mph (0.0%) |
| Super Tour May 2023 | 2023-05-13 | Grp 4 STL.STU,T2,T3,T4 Race 1 | STU | 99 | Porsche Boxster | 4/4 | 1:28.333 | 1:26.013Marc Hoover | +2.320s (2.70%) | |||
| Super Tour May 2023 | 2023-05-13 | Grp 4 STL.STU,T2,T3,T4 Qual 1 | STU | 99 | Porsche Boxster | 3/4 | 1:27.916 | 1:25.518Marc Hoover | +2.398s (2.80%) |
Road America · Alt (4.05 mi)
| Event | Date | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2024 · Alt | 2024-10-04 | STU Race | STU | 99 | Porsche Boxster | 12/17 | 2:37.805 | 2:25.824Thomas Noble | +11.981s (8.22%) | 132.713/17 | 144.2Thomas Noble | -11.5 mph (-8.0%) |
| Runoffs 2024 · Alt | 2024-10-03 | STU Qual 3 | STU | 99 | Porsche Boxster | 15/17 | 2:34.890 | 2:26.227Thomas Noble | +8.663s (5.92%) | |||
| Runoffs 2024 · Alt | 2024-10-02 | GT3/STU Qual 2 | STU | 99 | Porsche Boxster | 14/15 | 2:37.093 | 2:27.504Thomas Noble | +9.589s (6.50%) | 132.412/15 | 145.3Thomas Noble | -12.9 mph (-8.9%) |
| Runoffs 2024 · Alt | 2024-10-01 | GT3/STU Qual 1 | STU | 99 | Porsche Boxster | 17/17 | 2:44.647 | 2:28.210Chip Herr | +16.437s (11.09%) | 125.715/17 | 143.0Thomas Noble | -17.4 mph (-12.1%) |
Sonoma Raceway (2.52 mi)
| Event | Date | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2018 | 2018-10-21 | STL Race | STL | 09 | Mazda Miata | 8/17 | 1:54.560 | 1:49.754Danny Steyn | +4.806s (4.38%) | 95.79/17 | 102.4Craig McHaffie | -6.6 mph (-6.5%) |
| Runoffs 2018 | 2018-10-18 | STL Qual 3 | STL | 09 | Mazda Miata | 13/18 | 1:56.229 | 1:49.138Danny Steyn | +7.091s (6.50%) | 93.08/18 | 99.7Danny Steyn | -6.6 mph (-6.7%) |
| Runoffs 2018 | 2018-10-17 | STL Qual 2 | STL | 09 | Mazda Miata | 12/19 | 1:55.855 | 1:49.378Danny Steyn | +6.477s (5.92%) | 95.06/19 | 103.2Craig McHaffie | -8.1 mph (-7.9%) |
| Runoffs 2018 | 2018-10-16 | STL Qual 1 | STL | 09 | Mazda Miata | 12/18 | 1:57.324 | 1:50.686Cliff Ira | +6.638s (6.00%) | 89.015/18 | 100.2Danny Steyn | -11.2 mph (-11.2%) |
| Runoffs 2018 | 2018-10-16 | Mon Grp 5 Run 3 | STL | 09 | Mazda Miata | 6/8 | 1:59.061 | 1:52.391Tim Auger | +6.670s (5.93%) | |||
| Runoffs 2018 | 2018-10-15 | Mon Grp 5 Run 2 | STL | 09 | Mazda Miata | 4/8 | 1:57.257 | 1:52.824Tim Auger | +4.433s (3.93%) | |||
| Runoffs 2018 | 2018-10-15 | Mon Grp 5 Run 1 | STL | 09 | Mazda Miata | 4/8 | 1:56.249 | 1:52.773Craig McHaffie | +3.476s (3.08%) |
Buttonwillow Raceway Park (2.92 mi)
| Event | Date | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Super Tour Apr 2018 | 2018-04-29 | Grp 7 STL,STU,T2,T3,T4 Race 2 | STL | 89 | Mazda Miata | 9/8 | 2:03.448James Bishop | |||||
| Super Tour Apr 2018 | 2018-04-28 | Grp 7 STL,STU,T2,T3,T4 Race 1 | STL | 89 | Mazda Miata | 12/12 | 2:12.481 | 2:03.253James Bishop | +9.228s (7.49%) | |||
| Super Tour Apr 2018 | 2018-04-28 | Grp 7 STL,STU,T2,T3,T4 Qual 2 | STL | 89 | Mazda Miata | 4/8 | 2:04.848 | 2:03.130James Bishop | +1.718s (1.40%) | |||
| Super Tour Apr 2018 | 2018-04-27 | Grp 7 STL,STU,T2,T3,T4 Qual 1 | STL | 89 | Mazda Miata | 2/10 | 2:05.197 | 2:04.301James Bishop | +0.896s (0.72%) | |||
| Super Tour Apr 2018 | 2018-04-27 | Grp 7 STL,STU,T2,T3,T4 Prac | STL | 89 | Mazda Miata | 3/8 | 2:05.512 | 2:04.547Thomas Lepper | +0.965s (0.77%) |
Letters to Fastrack
STU Allow Vents on Front Fenders for Mid/Rear Engined Cars
#34908 from Cameron Wagner · Recommended to the Board · Minutes (2023-12 Fastrack)
In GCR, STU Specific Technical Regulations, Section 9.1.4.1.A.2., add the following:
"Hoods may have a maximum of 2 vents installed for cooling purposes. Cars with mid or rear engines may have a maximum of 2
vents located in the hood or fenders for cooling purposes. The maximum combined total area of the vents shall not exceed 200
square inches. The 200 Square inches includes any area that deviates from the factory hood or fender(s) profile. Louvers within
the 200 sq. inch are allowed. Louver vents that are OEM do not count in the number of vents allowed or 200 square inch
allowance.
STU Rule 9.1.4.F.1 - Adjust Wheel Width Min Weight
#32282 from Cameron Wagner · Not recommended · Minutes (2022-04 Fastrack)
Thank you for your letter. We would like to see the effect of the new weight chart before making adjustments to the wheel
width rule.