T1 Cadillac CT4-V Blackwing
#38003 from Touring Committee · Rule change · TB 25-04 (2025-04 Fastrack)
In T1 Spec Lines, classify Cadillac CT4-V Blackwing as follows:
A specification table follows in the original; it is not shown here.
BoP Lab / Michelin Raceway Road Atlanta
| Pos | Car | Driver | Class | # | Best lap | Best theoretical lap | Best qual lap | Best race lap | Best trap speed | Best S1 | Best S2 | Best S3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Chevrolet Corvette | James Candelaria | T1 | 134 | 1:29.204 A-Q2 | sector data unreliable | 1:29.204 A-Q2 | 1:29.605 A-R1 | 150.0 A-Q2, A-R1 | 35.247 | 0.578 | 22.683 |
| 2 | BMW M3 | Jonathan Vasquez | T1 | 127 | 1:31.277 B-R2 | 1:30.965 | 1:32.229 B-Q2 | 1:31.277 B-R2 | 137.4 B-P | 35.500 B-R2 | 32.367 B-P | 23.098 B-R1 |
| 3 | Chevrolet Camaro GT4.R | Zachary Monette | T1 | 99 | 1:31.320 B-R2 | 1:31.182 | 1:31.624 B-Q1 | 1:31.320 B-R2 | 138.3 B-Q1 | 36.100 B-R2 | 32.057 B-R2 | 23.025 B-R2 |
| 4 | Mercedes-Benz GT4 | Wes Humphryes | T1 | 49 | 1:32.334 A-R1 | 1:32.044 | 1:36.125 A-Q2 | 1:32.334 A-R1 | 142.6 A-Q2, A-R1 | 36.153 A-R1 | 32.380 A-R1 | 23.511 A-R1 |
| 5 | Ford Mustang FP350s | Paolo Salvatore | T1 | 42 | 1:32.839 B-Q2 | 1:32.371 | 1:32.839 B-Q2 | 1:33.035 B-R1 | 137.0 B-Q1 | 36.538 B-Q2 | 32.571 B-Q2 | 23.262 B-Q2 |
| 6 | BMW M4 | Juan Carlos Leroux | T1 | 74 | 1:33.045 B-R2 | 1:32.585 | 1:33.397 B-Q1 | 1:33.045 B-R2 | 131.7 B-P, B-R1 | 36.372 B-R1 | 32.730 B-R2 | 23.483 B-R1 |
| 7 | Porsche Cayman 981 GT4 Clubsport | Ivy Wood >115% | T1 | 32 | 1:44.298 A-P> | 1:42.816> | 118.6 A-P> | 41.410 A-P> | 34.509 A-P> | 26.897 A-P> |
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 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 ">" (with ">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.
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.
By car
| Car | Class | Drivers | Best lap | Best qual | Best race | Best trap | Best S1 | Best S2 | Best S3 |
|---|---|---|---|---|---|---|---|---|---|
| Chevrolet Corvette | T1 | 1 | 1:29.204James Candelaria | 1:29.204James Candelaria | 1:29.605James Candelaria | 150.0James Candelaria | 35.247James Candelaria | 0.578James Candelaria | 22.683James Candelaria |
| BMW M3 | T1 | 1 | 1:31.277Jonathan Vasquez | 1:32.229Jonathan Vasquez | 1:31.277Jonathan Vasquez | 137.4Jonathan Vasquez | 35.500Jonathan Vasquez | 32.367Jonathan Vasquez | 23.098Jonathan Vasquez |
| Chevrolet Camaro GT4.R | T1 | 1 | 1:31.320Zachary Monette | 1:31.624Zachary Monette | 1:31.320Zachary Monette | 138.3Zachary Monette | 36.100Zachary Monette | 32.057Zachary Monette | 23.025Zachary Monette |
| Mercedes-Benz GT4 | T1 | 1 | 1:32.334Wes Humphryes | 1:36.125Wes Humphryes | 1:32.334Wes Humphryes | 142.6Wes Humphryes | 36.153Wes Humphryes | 32.380Wes Humphryes | 23.511Wes Humphryes |
| Ford Mustang FP350s | T1 | 1 | 1:32.839Paolo Salvatore | 1:32.839Paolo Salvatore | 1:33.035Paolo Salvatore | 137.0Paolo Salvatore | 36.538Paolo Salvatore | 32.571Paolo Salvatore | 23.262Paolo Salvatore |
| BMW M4 | T1 | 1 | 1:33.045Juan Carlos Leroux | 1:33.397Juan Carlos Leroux | 1:33.045Juan Carlos Leroux | 131.7Juan Carlos Leroux | 36.372Juan Carlos Leroux | 32.730Juan Carlos Leroux | 23.483Juan Carlos Leroux |
| Porsche Cayman 981 GT4 Clubsport | T1 | 1 | 1:44.298Ivy Wood | 118.6Ivy Wood | 41.410Ivy Wood | 34.509Ivy Wood | 26.897Ivy Wood |
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
Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta → Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta 2025-03-07 to 2026-03-06
T1 Acceptance of Porsche 981 GT4 Clubsport into T1
#36664 from John Brown · Rule change · TB 25-05 (2025-05 Fastrack)
In T1-GT4 Spec Lines, classify Porsche 981 GT4 Clubsport as follows:
A specification table follows in the original; it is not shown here.
T1 Request to Restore T1 Honda S2000 to Proper Weights
#37644 from David Mead · Rule change · TB 25-05 (2025-05 Fastrack)
In T1 Spec Lines, Honda S2000, Spec Line 1530, change as follows:
Minimum Weight: "2950 2900"
Chassis Notes: "This spec line is set to expire as of 12/31/2025 if not represented in Majors competition in 2025."
T1 DCT Transmission in E46
#37964 from Matt Spicuzzi · Rule change · TB 25-05 (2025-05 Fastrack)
In T1 Spec Lines, BMW E46 M3, add to Chassis Notes the following:
SL# 1060: "BMW #GS7D36SG transmission permitted as an aftermarket sequential option."
SL# 1070: "BMW #GS7D36SG transmission permitted as an aftermarket sequential option."
Applies to BMW M3 on this page: Jonathan Vasquez
T1 Reduce E92 M3 Minimum Weight to 3050
#38092 from Shane Brown · Rule change · TB 25-05 (2025-05 Fastrack)
In T1 Spec Lines, BMW M3 E92 (08-13), Spec Line 1100, change Min. Weight as follows:"3350 3300"
T1 Finalize Spec Line for T1 Darkhorse
#38106 from Touring Committee · Rule change · TB 25-05 (2025-05 Fastrack)
In T1 Spec Lines, Mustang Darkhorse R (Mustang Challenge) Spec Line- 4119, change as follows:
Tire size: "305 315 (f) 315(r)"
Performance Control: "TBD"
Min. Weight with driver (LBS): "10.5 (f) 11 (r) 3600"
Chassis Notes: "Must conform to Mustang Challenge Rules. Tires conforming to Mustang Challenge rules are permitted. **This
car is not eligible for the Runoffs until it has competed in 3 Super Tour events.**"
T1 Keep S2000 Classification
#39344 from David Mead · Rule change · TB 25-12 (2025-12 Fastrack)
In T1 Spec Lines, Honda S2000, change as follows:
T1 Correcting and updating T1 GT4 spec lines
#39394 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)
In T1-GT4 Spec Lines, change as follows:
A specification table follows in the original; it is not shown here.
T1 BOP adjustments to non GT4 T1 cars
#39406 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)
In T1 Spec Lines, change as follows:
Spec Line # 1134
Required Restrictor: "61mm 70mm - Flat Plate"
Spec Line # 1140
Required Restrictor: "72mm - Flat Plate"
Spec Line # "1175"
Maximum Displ.: "L76 5967cc OEM"
Minimum Weight: "3250"
Show 38 more lines
Required Restrictor: "80mm"
Engine Notes: "An L76 is an LS2 block with LS3 intake manifold and heads. All parts must be OEM. May resleeve to stock
parameters for engine repair."
Spec Line # 1180
Required Restrictor: "75mm 78mm - Flat Plate"
Spec Line # 1190
Required Restrictor: "70mm 73mm - Flat Plate"
Spec Line # 1200
Required Restrictor: "72mm 78mm - Flat Plate"
Spec Line # 1201
Required Restrictor: "70mm 73mm - Flat Plate"
Spec Line # 1210
Required Restrictor: "72mm - Flat Plate"
Spec Line # 1350
Required Restrictor: "(2) 55mm 60mm flat plate"
Spec Line # 1370
Required Restrictor: "(2) 55mm 60mm flat plate"
Spec Line # 1390
Required Restrictor: "(2) 55mm 60mm flat plate"
Spec Line # 1420 "*Spec line Expires 12/23"
Required Restrictor: "52mm FPR"
Spec Line # 1429
Required Restrictor: "75mm - FPR"
Spec Line # 1460
Weight: "3500 3600"
Required Restrictor: "70mm - FPR"
Spec Line # 1480
Required Restrictor: "80mm FPR"
Spec Line # 1490
Required Restrictor: "75mm - FPR"
Spec Line # 1590
Engine Notes: "90mm Throttle Body Permitted"
Spec Line # 1595
Required Restrictor: "72mm – FPR"
Spec Line # 1596
Required Restrictor: "61mm 70mm – FPR"
Spec Line # 4120
Required Restrictor: "75mm flat plate"
T1 Remove T1 Spec Line
#39407 from Touring Committee · Rule change · TB 25-12 (2025-12 Fastrack)
In T1 Spec Lines, BMW M3 E92 (08-13) Spec Line number 1090, delete Spec Line in its entirety.
T1 additional T1 adjustment
#39520 from Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)
In T1 Spec Line, Spec line # 1132, change Restrictor as follows:
"70mm - Flat Plate"
T1 LS1 into Corvette C6 Spec Line Request
#39716 from Danny Kellermeyerhttps://crbscca.com/secu · Rule change · TB 26-02 (2026-02 Fastrack)
In T1 Spec Lines, reinstate Spec Line # 1139, Chevrolet Corvette C6 (05-13) Includes Z51, GrandSport, Z06, Z06 Carbon, as
follows:
Max Displ: "LS1, LS6 OEM"
Min Weight: "3200"
Required Restrictor: "70mm"
T1 Replace OEM Heat Exchanger (Intercooler) With Aftermarket
#39542 from Roy Lipner · Rule change · TB 26-03 (2026-03 Fastrack)
In T1 GT4 Spec Lines, Spec Line 4030-, add to Chassis Notes the following:
"Wagner Tuning # 200001124 Intercooler allowed."
What the rules allowed changed as listed; this does not say what any particular car ran.