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BoP Lab / Michelin Raceway Road Atlanta

AS + FF + FV at Michelin Raceway Road Atlanta

Class · click a class to switch, + to compare alongside
Events

One lap is left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.

PosCarDriverClass#LapTheoreticalQualRace5-lap stintConsistencyTrapS1S2S3
1Piper DF05Porter AikenFF211:31.000 D-Q21:31.0001:31.000 D-Q21:31.797 D-R11:32.268 D-R1+0.761 D-R1130.3 D-Q234.534 D-Q233.016 D-Q223.450 D-Q2
2Mygale SJ14HRobert AlbaniFF411:31.059 D-R11:30.8691:35.262 D-Q21:31.059 D-R11:33.944 D-R1+4.021 D-R1135.6 D-Q133.334 D-R133.590 D-R123.945 D-R1
3Swift DB6John Robinson IIFF191:31.242 D-R11:30.8951:32.097 D-Q21:31.242 D-R11:32.292 D-R1+1.746 D-R1134.3 D-R134.930 D-Q232.498 D-R123.467 D-R1
4Van Diemen RF00Chris SmithFF571:31.334 D-R11:31.1731:34.065 A-Q21:31.334 D-R11:32.700 D-R1+2.012 D-R1134.3 D-R134.806 D-R132.940 D-R123.427 D-R1
5Mygale SJ13Sebastian Mateo Naranjo 2+ carsFF081:31.374 D-Q21:31.0981:31.374 D-Q21:31.587 D-R11:32.290 D-R1+1.352 D-R1133.1 D-R134.756 D-R132.943 D-R123.399 D-Q2
6Van Dieman FFJoe ColasaccoFF31:31.412 D-R11:30.7261:32.745 D-Q21:31.412 D-R11:32.178 D-R1+1.095 D-R1134.5 D-R134.483 D-R132.731 D-R123.512 D-R1
7Mygale SJ14\HondaCallum BaxterFF651:31.421 D-R11:31.1651:32.506 D-Q21:31.421 D-R11:31.997 D-R1+1.184 D-R1135.8 D-R134.649 D-R132.985 D-R123.531 D-R1
8Mygale F1600Dillon DefonceFF811:31.562 D-R11:30.7711:32.699 D-Q21:31.562 D-R11:31.953 D-R1+0.859 D-R1134.3 D-R134.482 D-R132.966 D-R123.323 D-R1
9Mygale GREly NavarroFF011:31.574 D-R11:31.3121:31.621 D-Q21:31.574 D-R11:32.240 D-R1+0.979 D-R1130.3 D-R134.547 D-R133.192 D-R123.573 D-Q2
10Mygale F1600David YbarraFF061:31.691 A-R11:31.6911:32.437 A-Q21:31.691 A-R11:32.944 A-R1+1.826 A-R1125.2 A-P34.633 A-R133.438 A-R123.620 A-R1
11Mygale SJ2014Sebastian Mateo Naranjo 2+ carsFF081:32.019 C-Q11:31.5771:32.019 C-Q11:32.061 C-R21:32.398 C-R2+1.179 C-R2119.9 C-R234.874 C-R233.156 C-R223.547 C-R2
12Van Dieman F1600Trevor RussellFF321:32.266 D-R11:31.8381:34.162 D-Q21:32.266 D-R11:32.747 D-R1+1.246 D-R1130.5 D-R134.751 D-R133.519 D-R123.568 D-R1
13Spectrum 14HDavid H Livingston JrFF851:32.421 D-R11:31.9831:33.339 D-Q21:32.421 D-R11:32.983 D-R1+1.136 D-R1131.1 D-R135.020 D-R133.218 D-R123.745 D-R1
14Mygale F1600Karsten DefonceFF821:32.554 D-R11:31.8221:33.839 D-Q21:32.554 D-R11:33.047 D-R1+1.288 D-R1131.7 D-R135.080 D-R133.193 D-R123.549 D-R1
15Mygale F1600Jake LeroyFF031:32.585 A-R11:32.0451:33.176 A-Q21:32.585 A-R11:33.093 A-R1+1.221 A-R1126.9 A-R134.841 A-R133.570 A-R123.634 A-R1
16Piper DF-5Michael BulzacchelliFF931:32.974 D-R11:32.6521:34.842 D-Q21:32.974 D-R11:33.799 D-R1+1.588 D-R1129.3 D-R135.258 D-R133.608 D-R123.786 D-R1
17Piper DL7/HondaAntonio CostantinoFF31:33.448 C-R21:33.2791:34.562 C-Q11:33.448 C-R21:34.331 C-R2+1.947 C-R2119.9 C-Q135.684 C-R233.691 C-R223.904 C-R2
18Piper DL7Camryn ReedFF091:33.999 D-Q21:33.7171:33.999 D-Q21:34.531 D-R11:35.195 D-R1+0.903 D-R1128.6 D-R135.955 D-Q233.767 D-R123.995 D-R1
19Piper DL7/HondaCalum DunbarFF121:34.054 C-R21:33.5591:35.208 C-Q11:34.054 C-R21:35.082 C-R2+1.807 C-R2122.0 C-R235.895 C-R233.551 C-R224.113 C-R2
20Mygale F1600Axel LeroyFF751:34.544 A-R11:33.7061:35.075 A-Q21:34.544 A-R11:35.585 A-R1+1.219 A-R1127.3 A-Q235.730 A-R133.981 A-Q223.995 A-Q2
21Citation F1600Miles CrabbeFF81:34.549 A-P1:34.1641:34.876 A-Q21:35.412 A-R11:36.482 A-R1+1.687 A-R1125.2 A-R135.861 A-P34.169 A-R124.134 A-Q2
22Ford MustangMichael KamalianAS199, 991:34.642 A-R11:34.5691:36.558 B-Q11:34.642 A-R11:36.577 A-R1+7.895 A-R1140.9 A-R137.067 A-R133.474 A-R124.028 A-R1
23Mygale SJ13Ken BouquillonFF831:34.710 D-R11:34.3921:35.276 D-Q21:34.710 D-R11:34.985 D-R1+2.767 D-R1129.0 D-R136.452 D-R133.810 D-Q224.130 D-R1
24Mygale GRMichael DowdenFF011:34.904 C-Q11:34.3791:34.904 C-Q11:35.211 C-R21:35.816 C-R2+1.248 C-R2116.8 C-R1, C-R236.056 C-R234.048 C-R224.275 C-Q1
25Van Diemen RF02Kevin BrumbaughFF861:35.150 D-R11:35.0291:36.770 D-Q21:35.150 D-R11:36.506 D-R1+1.745 D-R1129.5 D-Q236.763 D-R133.720 D-R124.546 D-Q2
26Ford MustangThomas J EllisAS511:35.351 B-R21:34.7011:35.467 B-Q21:35.351 B-R21:36.206 B-R2+1.450 B-R2138.3 B-R237.678 B-R232.639 B-Q224.384 B-R2
27Ford MustangGregory EatonAS211:35.692 B-R21:35.2951:36.767 B-Q21:35.692 B-R21:36.001 B-R2+0.932 B-R2132.5 B-R237.336 B-R233.408 B-Q224.551 B-R2
28Ford Mustang GTJames JostAS141:36.389 B-R21:35.5321:38.195 B-Q21:36.389 B-R21:37.112 B-R2+1.514 B-R2138.6 B-Q138.069 B-R132.794 B-R224.669 B-R2
29Piper DL7\HondaBrian GrahamFF21:36.474 D-R11:36.0511:36.690 D-Q21:36.474 D-R11:37.329 D-R1+1.345 D-R1125.6 D-R136.711 D-Q234.537 D-R124.803 D-R1
30Spectrum 014HSam LockwoodFF701:37.862 A-Q21:37.4351:37.862 A-Q21:38.186 A-R11:39.431 A-R1+2.126 A-R1122.9 A-Q237.748 A-Q234.842 A-Q224.845 A-Q2
31Swift DB-3Dan CarneyFF441:41.600 C-R11:41.6001:52.195 C-Q11:41.600 C-R11:47.375 C-R2+2.695 C-R2114.0 C-R141.271 C-R236.720 C-R227.511 C-R1
32Protoform P2Andrew WhitstonFV721:43.556 C-R21:43.2581:44.524 C-Q11:43.556 C-R21:44.315 C-R2+1.645 C-R2102.2 C-R238.495 C-R237.974 C-Q126.789 C-R1
33Vorscha GB4Mitchell FergusonFV521:43.727 C-R21:43.4531:45.537 C-Q11:43.727 C-R21:44.953 C-R2+1.929 C-R2107.9 D-R138.733 C-R237.804 C-R226.916 D-R1
34Protoform P2Mike LawrenceFV361:44.011 C-R21:43.4481:44.684 C-Q11:44.011 C-R21:45.285 C-R2+2.269 C-R2105.7 A-R138.779 C-R237.547 C-R227.122 C-Q1
35Chevrolet Camaro Z-28Phillip WatersAS1771:44.301 C-Q11:44.3011:44.301 C-Q12:00.265 C-R12:08.610 C-R1+11.503 C-R1130.0 C-Q142.124 C-Q135.315 C-Q126.862 C-Q1
36Protoform P2Steve WhitstonFV181:44.543 C-R21:43.6741:47.631 C-Q11:44.543 C-R21:44.979 C-R2+1.230 C-R2100.8 C-R238.681 C-R237.994 C-R226.999 C-R1
37VortechStevan DavisFV801:44.874 C-R11:44.3231:45.108 C-Q11:44.874 C-R11:45.215 C-R1+0.743 C-R1107.1 D-R139.256 C-R137.982 D-R127.085 C-R1
38Agitator 016Donnie IsleyFV301:45.061 A-Q11:44.7091:45.061 A-Q11:45.145 C-R21:46.709 C-R1+2.026 C-R1107.1 A-R139.108 C-R238.266 A-Q127.335 D-R1
39Volkswagen ProtoformTrevor CarmodyFV71:46.487 D-R11:45.5961:48.091 D-Q21:46.487 D-R11:47.414 D-R1+1.986 D-R1107.7 D-R140.081 D-R138.178 D-R127.337 D-R1
40VortechAnthony HendersonFV171:46.846 A-Q21:46.7421:46.846 A-Q21:48.094 A-R11:48.311 A-R1+1.076 A-R1105.3 A-Q140.017 A-Q239.235 A-Q227.490 A-Q2
41Vorscha GB3Smith Jackson RagsdaleFV21:47.324 C-R21:46.7641:57.449 C-Q21:47.324 C-R21:47.590 C-R2+0.596 C-R298.4 C-R139.639 C-R239.124 C-R128.001 C-R2
42Mysterian M2Michael Nitz 2+ carsFV941:47.478 C-R21:46.7131:47.545 C-Q11:47.478 C-R21:48.309 C-R2+2.205 C-R299.5 C-R240.302 C-Q138.742 C-R127.669 C-R1
43JK Technologies XP-1Jonathan WeisheitFV611:47.543 D-R11:46.6681:52.465 D-Q21:47.543 D-R11:49.024 D-R1+1.337 D-R1107.2 D-R140.399 D-R138.760 D-R127.509 D-R1
44Protoform P2Ron WhitstonFV51:48.017 C-R21:47.5891:48.590 C-Q11:48.017 C-R21:48.705 C-R2+1.264 C-R2100.0 C-R140.887 C-R239.284 C-R227.418 C-R1
45Protoform P3Rich Richardson 2+ carsFV641:48.141 C-R21:47.5821:52.689 C-Q11:48.141 C-R21:48.473 C-R2+1.364 C-R298.5 C-R141.004 C-R238.798 C-R227.780 C-R2
46Caracal DRussell FredericksFV231:48.336 D-R11:47.5811:49.406 D-Q21:48.336 D-R11:51.704 D-R1+3.129 D-R1108.5 D-R140.769 D-R139.011 D-R127.801 D-Q2
47Mysterian M3Mark Richardson 2+ carsFV201:49.107 C-R21:48.6581:50.256 C-Q11:49.107 C-R21:49.886 C-R2+1.935 C-R2100.3 C-R141.213 C-R239.424 C-R128.021 C-R2
48Protoform P2Michael Nitz 2+ carsFV941:49.464 A-Q21:48.5381:49.464 A-Q21:49.714 A-R11:49.998 A-R1+1.110 A-R1103.8 A-Q141.062 A-R139.681 A-R127.795 A-R1
49Lazer 1Rich Richardson 2+ carsFV991:49.498 A-R11:49.0601:50.080 A-Q21:49.498 A-R11:50.116 A-R1+1.776 A-R1102.5 A-Q141.168 A-R139.823 A-R128.069 A-R1
50Mysterian M2Jacob SchillingFV851:50.348 A-R11:49.7651:51.018 A-Q11:50.348 A-R11:51.279 A-R1+2.498 A-R1103.8 A-R141.717 A-R139.978 A-Q128.070 A-R1
51VortechMark Richardson 2+ carsFV881:50.913 A-R11:50.3201:51.390 A-Q21:50.913 A-R11:51.900 A-R1+2.084 A-R1103.0 A-R141.990 A-R139.924 A-R128.406 A-R1
52CrusaderWilliam Duke RagsdaleFV031:51.031 C-R11:49.3052:01.913 C-Q21:51.031 C-R11:51.237 C-R2+0.464 C-R296.6 C-R240.655 C-R239.992 C-R228.658 C-R2
53Caracel CJohn McaleerFV21:51.291 A-R11:50.3121:52.321 A-Q21:51.291 A-R11:52.552 A-R1+2.364 A-R1104.6 A-R141.585 A-R140.766 A-R127.961 A-R1
54Citation CW1Barry SheltonFV961:52.837 A-R11:52.1621:53.780 A-Q21:52.837 A-R11:53.328 A-R1+0.621 A-R1100.4 A-Q242.282 A-R141.029 A-R128.851 A-R1

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. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come 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.

Sectors

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

CarClassDriversLapQualRaceTrapS1S2S3
Piper DF05FF11:31.000Porter Aiken1:31.000Porter Aiken1:31.797Porter Aiken130.3Porter Aiken34.534Porter Aiken33.016Porter Aiken23.450Porter Aiken
Mygale SJ14HFF11:31.059Robert Albani1:35.262Robert Albani1:31.059Robert Albani135.6Robert Albani33.334Robert Albani33.590Robert Albani23.945Robert Albani
Swift DB6FF11:31.242John Robinson II1:32.097John Robinson II1:31.242John Robinson II134.3John Robinson II34.930John Robinson II32.498John Robinson II23.467John Robinson II
Van Diemen RF00FF11:31.334Chris Smith1:34.065Chris Smith1:31.334Chris Smith134.3Chris Smith34.806Chris Smith32.940Chris Smith23.427Chris Smith
Mygale SJ13FF21:31.374Sebastian Mateo Naranjo1:31.374Sebastian Mateo Naranjo1:31.587Sebastian Mateo Naranjo133.1Sebastian Mateo Naranjo34.756Sebastian Mateo Naranjo32.943Sebastian Mateo Naranjo23.399Sebastian Mateo Naranjo
Van Dieman F1600FF21:31.412Joe Colasacco1:32.745Joe Colasacco1:31.412Joe Colasacco134.5Joe Colasacco34.483Joe Colasacco32.731Joe Colasacco23.512Joe Colasacco
Mygale SJ14\HondaFF11:31.421Callum Baxter1:32.506Callum Baxter1:31.421Callum Baxter135.8Callum Baxter34.649Callum Baxter32.985Callum Baxter23.531Callum Baxter
Mygale F1600FF51:31.562Dillon Defonce1:32.437David Ybarra1:31.562Dillon Defonce134.3Dillon Defonce34.482Dillon Defonce32.966Dillon Defonce23.323Dillon Defonce
Mygale GRFF21:31.574Ely Navarro1:31.621Ely Navarro1:31.574Ely Navarro130.3Ely Navarro34.547Ely Navarro33.192Ely Navarro23.573Ely Navarro
Mygale SJ2014FF11:32.019Sebastian Mateo Naranjo1:32.019Sebastian Mateo Naranjo1:32.061Sebastian Mateo Naranjo119.9Sebastian Mateo Naranjo34.874Sebastian Mateo Naranjo33.156Sebastian Mateo Naranjo23.547Sebastian Mateo Naranjo
Spectrum 14HFF11:32.421David H Livingston Jr1:33.339David H Livingston Jr1:32.421David H Livingston Jr131.1David H Livingston Jr35.020David H Livingston Jr33.218David H Livingston Jr23.745David H Livingston Jr
Piper DF-5FF11:32.974Michael Bulzacchelli1:34.842Michael Bulzacchelli1:32.974Michael Bulzacchelli129.3Michael Bulzacchelli35.258Michael Bulzacchelli33.608Michael Bulzacchelli23.786Michael Bulzacchelli
Piper DL7/HondaFF41:33.448Antonio Costantino1:33.999Camryn Reed1:33.448Antonio Costantino128.6Camryn Reed35.684Antonio Costantino33.551Calum Dunbar23.904Antonio Costantino
Citation F1600FF11:34.549Miles Crabbe1:34.876Miles Crabbe1:35.412Miles Crabbe125.2Miles Crabbe35.861Miles Crabbe34.169Miles Crabbe24.134Miles Crabbe
Ford MustangAS41:34.642Michael Kamalian1:35.467Thomas J Ellis1:34.642Michael Kamalian140.9Michael Kamalian37.067Michael Kamalian32.639Thomas J Ellis24.028Michael Kamalian
Van Diemen RF02FF11:35.150Kevin Brumbaugh1:36.770Kevin Brumbaugh1:35.150Kevin Brumbaugh129.5Kevin Brumbaugh36.763Kevin Brumbaugh33.720Kevin Brumbaugh24.546Kevin Brumbaugh
Spectrum 014HFF11:37.862Sam Lockwood1:37.862Sam Lockwood1:38.186Sam Lockwood122.9Sam Lockwood37.748Sam Lockwood34.842Sam Lockwood24.845Sam Lockwood
Swift DB-3FF11:41.600Dan Carney1:52.195Dan Carney1:41.600Dan Carney114.0Dan Carney41.271Dan Carney36.720Dan Carney27.511Dan Carney
Protoform P2FV51:43.556Andrew Whitston1:44.524Andrew Whitston1:43.556Andrew Whitston105.7Mike Lawrence38.495Andrew Whitston37.547Mike Lawrence26.789Andrew Whitston
Vorscha GB4FV11:43.727Mitchell Ferguson1:45.537Mitchell Ferguson1:43.727Mitchell Ferguson107.9Mitchell Ferguson38.733Mitchell Ferguson37.804Mitchell Ferguson26.916Mitchell Ferguson
Chevrolet Camaro Z-28AS11:44.301Phillip Waters1:44.301Phillip Waters2:00.265Phillip Waters130.0Phillip Waters42.124Phillip Waters35.315Phillip Waters26.862Phillip Waters
VortechFV31:44.874Stevan Davis1:45.108Stevan Davis1:44.874Stevan Davis107.1Stevan Davis39.256Stevan Davis37.982Stevan Davis27.085Stevan Davis
Agitator 016FV11:45.061Donnie Isley1:45.061Donnie Isley1:45.145Donnie Isley107.1Donnie Isley39.108Donnie Isley38.266Donnie Isley27.335Donnie Isley
Volkswagen ProtoformFV11:46.487Trevor Carmody1:48.091Trevor Carmody1:46.487Trevor Carmody107.7Trevor Carmody40.081Trevor Carmody38.178Trevor Carmody27.337Trevor Carmody
Vorscha GB3FV11:47.324Smith Jackson Ragsdale1:57.449Smith Jackson Ragsdale1:47.324Smith Jackson Ragsdale98.4Smith Jackson Ragsdale39.639Smith Jackson Ragsdale39.124Smith Jackson Ragsdale28.001Smith Jackson Ragsdale
Mysterian M2FV21:47.478Michael Nitz1:47.545Michael Nitz1:47.478Michael Nitz103.8Jacob Schilling40.302Michael Nitz38.742Michael Nitz27.669Michael Nitz
JK Technologies XP-1FV11:47.543Jonathan Weisheit1:52.465Jonathan Weisheit1:47.543Jonathan Weisheit107.2Jonathan Weisheit40.399Jonathan Weisheit38.760Jonathan Weisheit27.509Jonathan Weisheit
Protoform P3FV11:48.141Rich Richardson1:52.689Rich Richardson1:48.141Rich Richardson98.5Rich Richardson41.004Rich Richardson38.798Rich Richardson27.780Rich Richardson
Caracal DFV11:48.336Russell Fredericks1:49.406Russell Fredericks1:48.336Russell Fredericks108.5Russell Fredericks40.769Russell Fredericks39.011Russell Fredericks27.801Russell Fredericks
Mysterian M3FV11:49.107Mark Richardson1:50.256Mark Richardson1:49.107Mark Richardson100.3Mark Richardson41.213Mark Richardson39.424Mark Richardson28.021Mark Richardson
Lazer 1FV11:49.498Rich Richardson1:50.080Rich Richardson1:49.498Rich Richardson102.5Rich Richardson41.168Rich Richardson39.823Rich Richardson28.069Rich Richardson
CrusaderFV11:51.031William Duke Ragsdale2:01.913William Duke Ragsdale1:51.031William Duke Ragsdale96.6William Duke Ragsdale40.655William Duke Ragsdale39.992William Duke Ragsdale28.658William Duke Ragsdale
Caracel CFV11:51.291John Mcaleer1:52.321John Mcaleer1:51.291John Mcaleer104.6John Mcaleer41.585John Mcaleer40.766John Mcaleer27.961John Mcaleer
Citation CW1FV11:52.837Barry Shelton1:53.780Barry Shelton1:52.837Barry Shelton100.4Barry Shelton42.282Barry Shelton41.029Barry Shelton28.851Barry Shelton

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 Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta → Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta 2023-03-10 to 2024-03-08

AS Crate Motor Part Numbers

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

neutralAS crate motor part number specified: GM Performance CT400 P/N 19370604 engine assembly for GM vehicles.

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."

AS Request wheel size change

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

fasterAS Spec Lines Ford Mustang GT 5.0L (15-17) max wheel size increases to 19.0 inches.

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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

AS Alternative Upper Front Control Arms for Dodge Challenger

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

neutralAS Dodge Challenger 5.7L/6.1L/6.4L V8 now permits SPC-66045 alternate front upper control arms.

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."

AS Front Brake Caliper Adapters for Dodge Challenger

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

neutralAS Dodge Challenger 5.7L/6.1L/6.4L V8 allows alternate front brake caliper adapters for updated or backdated components.

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."

FV FV Wheel Bearing Clarification

#35150 from Formula/Sports Racing Committee · Rule change · TB 23-12 (2023-12 Fastrack)

neutralFV front wheel bearings wording clarified in GCR 9.1.1.C.10.G.

In FV, GCR section 9.1.1.C.10.G, change as follows:
"Front W wheel bearings"

FF Honda Fit Oversize Piston Rings

#35305 from Doug Learned · Rule change · TB 24-01 (2024-01 Fastrack)

neutralFF Honda Fit gains Fast Forward FF800-100 oversize piston ring pack option.

In FF, GCR section 9.1.1.B.14.e.3.a, add the following:
"The standard ring pack, PN 13011-RB1-004 (Riken) or 13011-RB1-006 (Nippon), or the oversize ring pack, PN 13021-RB7-Z01
(Riken), or 13021-RB7-Z02 (Nippon), or FF800-100 (Fast Forward), may be used."

AS Request to Classify 1970-1981 Camaro and Firebird in AS

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

neutralChevrolet Camaro, Pontiac Firebird 70-81 Full Prep classified AS at 3400-3600 lbs with 250 lb weight reduction.

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.

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

AS Fuel Cell 12

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

neutralAS class: multiple cars gain fuel cell placement note allowing 24 inches from standard tank, unrestricted filler location.

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

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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.”

AS Please Classify the 6th Gen Into AS.

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

neutralChevrolet Camaro 16- Full Prep classified into AS at 3400 lbs with 250 lb weight reduction.

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:

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Chevrolet
Camaro (16-)
Full Prep
110.6 3.42, 2.28,

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

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

AS spec lines

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

neutralAS adds Ford Mustang GT 05-14 Restricted prep Engine with 62mm FPR, 3400 lbs minimum, 18-inch wheels.

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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta → Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta 2024-03-08 to 2025-03-07

AS Restricted Prep Aftermarket Parts Request

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

neutralAS Camaro/Firebird and GTO LS1 connecting rods approved: Callies CSC6100DS6A2AH, Scat 2-1CR6100-944, GM 12649190.

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

AS Allowance of 11

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

fasterAS Cadillac CTS-V, Chevrolet Camaro SS, Dodge Challenger, Ford Mustang GT, Pontiac GTO allowed 11" wheels until 3/1/25.

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."

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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 Chevrolet Camaro Z-28 on this page: Phillip Waters

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

AS 6th gen Camaro limited prep

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

neutralAS Chevrolet Camaro 1LE (2016-) classified with 3600 lbs minimum weight, 60mm restrictor, 275 tires.

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

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(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.

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)

neutralAS Chevrolet/Pontiac Camaro & Firebird 82-92 5.7L LS1 classified at 3200 lbs with 65mm restrictor plate required.

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.

AS Full Prep Head

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

neutralAS Chevrolet Camaro, Firebird, and Ford Mustang models permitted to use Flo Tek cylinder heads.

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."

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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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

AS Request for Classification of 2018-2023 mustang In

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

neutralAS Ford Mustang GT 5.0L (2018-) classified at 3600 lbs with 60mm restrictor, Brembo BBK permitted.

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.

AS Mustang transmission ratios

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

unclearAS Ford Mustang GT models gain alternate transmission ratio options for 2024-09-01.

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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

FF Update to FF EGR Blanking Plate Rule

#36633 from Matt Boian · Rule change · TB 24-10 (2024-10 Fastrack)

neutralFF VTEC activation valve must function; EGR blanking plate rule clarified with Fast Forward part numbers.

In FF, GCR section 9.1.1.B.14.r.1, change as follows:
"All emission control devices must be removed and blocked off by the blanking plate provided by HPD or Fast Forward as noted
below, except for the VTEC activation valve. The VTEC activation valve must be retained; and it must be functioning. No
modifications are permitted.
a. EGR Plate: Fast Forward PN: FF200-301.
b. EGR Port Cover: Fast Forward PN: FF200-302."

FV Disc Brakes

#36822 from Guy Bellingham · Rule change · TB 24-10 (2024-10 Fastrack)

neutralFV ferrous rotor no longer required to be smooth; may have up to three pad cleaning grooves per side.

In FV, GCR section 9.1.1.C.4.D, change as follows:
"Any ferrous alloy, unvented rotor may be used, but must have a maximum diameter of 11.75 in. and a minimum thickness of
0.20 in. The otherwise smooth rotor may not be cross-drilled and may have a maximum of three pad cleaning grooves per side."

FF Change FF/FC Weight with Sequential Gearbox

#36651 from Robert Wright · Rule change · TB 24-11 (2024-11 Fastrack)

fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.

In FF, GCR section 9.1.1.B.20.A.3, change as follows:
"Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight."
In FC, GCR section 9.1.1.B.20.B.4, change as follows:
"Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight."

FF Alternative Oversize Honda Fit Pistons

#37064 from Formula/Sports Racing Committee · Rule change · TB 24-11 (2024-11 Fastrack)

neutralFF Honda Fit allows Fast Forward 0.25mm oversize pistons PN FF800-110 as alternative; piston diameter spec clarified to 2.8835 inches.

In FF, GCR section 9.1.1.B.14.e.1, change as follows:
"Honda Fit OEM standard size pistons, PN: 13010-RB1-000, or Honda Fit OEM 0.25mm oversize pistons, PN: 13020-RB7-Z00, or
Fast Forward 0.25mm oversize pistons, PN: FF800-110, may be used."
In GCR section 9.1.1.B.14.e.2, change as follows:
"a. Maximum standard piston diameter, measured at a point 16mm from the bottom of the skirt: 73.240mm
(2.8834 2.8835 inches).
b. Centerline of wrist pin to crown maximum: 26.21mm (1.032 inches).
c. Maximum overall height from skirt to crown edge: 47.80mm (1.882 inches).

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d. Minimum weight: 198.0 grams (6.984 ounces).
e. Minimum weight of piston pin: 66 grams (2.25 ounces).
f. Combined minimum weight of piston, piston pin and connecting rod: 543.5 grams (18.85 ounces).
g. Combined minimum weight of piston, wrist pin, and circlips: 267 grams (9.418 ounces).
h. Centerline of wrist pin to crown edge: 26.289mm (1.035 inches).
i. Ring groove widths:
Top ring groove: 1.003mm (0.0395 inches).
Middle ring groove: 1.016mm (0.0400 inches).
Oil ring groove: 1.981mm (0.0780 inches).
j. Ring groove distance from wrist pin center to bottom of groove:
Top ring groove: 19.63mm (0.7730 inches).
Middle ring groove: 15.29mm (0.6020 inches).
Oil ring groove: 10.91mm (0.4295 inches)."

AS Increase Coyote Engine Restrictor to 80mm

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

fasterAS Ford Mustang Coyote engines increase restrictor to 80mm from 64mm or 67mm.

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"

AS Performance Pack for 2015+ Mustang

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

fasterAS Mustang GT 05-14 4.6L loses 300 lbs; 15-17 and 2018+ models lose 61mm and 60mm restrictors respectively.

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

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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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

AS Gear Ratios

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

neutralAS class gear ratio options specified for multiple American muscle cars, including Cadillac CTS-V, Chevrolet Camaro, Ford Mustang, Dodge Challenger, and Pontiac GTO.

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:

Show 42 more lines

"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"

AS ECU specs for LS engine

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

fasterAS LS-engine cars gain ECU freedom; Camaro/Firebird 93-02 LS1 removes fuel cell location restriction.

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:

Show 14 more lines

"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

FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change

#37802 from Anthony Stefanelli · Rule change · TB 25-03 (2025-03 Fastrack)

fasterFF allows older cars with rocker arm or outboard suspension to use bias ply slicks or VFF tires instead of radials.

In FF, GCR section 9.1.1.B.10.e, change as follows:
"Formula F shall be limited to the following tires (front tires may not be used as rears):
Dries:
Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13
Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13
Wets:
Front - Hoosier Wet or W3 Radial 44421 185/60R13
Rear - Hoosier Wet or W3 Radial 44426 205/60R13

Show 12 more lines

Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at
least one chassis end may use the following tires:
Dries:
Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick
Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick
Wets:
Radial wets listed above
or
Front - Hoosier 44165 135/545-13 VFF
Rear - Hoosier 44170 165/580-13 VFF
Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias
ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."

AS Race memo

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

unclearAS Spec Lines removes ECM flexibility restriction from five Cadillac and Chevrolet/Pontiac V8 models.

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):

Show 3 more lines

"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."

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

AS Flotek Head Plunge Cut Inconsistencies

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

unclearAS Flotek Head plunge cut dimensions figure updated in GCR Section 9.1.6.

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

AS Notes clean up

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

neutralAS class notes cleanup: multiple Camaro, Firebird, CTS-V, Challenger, Mustang specs and fuel cell/ECM/head restrictions removed.

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

Show 88 more lines

#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."

AS Errors and Omission

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

slowerAS Ford Mustang GT 5.0L (15-17) flat plate restrictor reduced from 67mm to 64mm.

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

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)

neutralAS LS1/LS6 5.3L truck engine gains four approved intake part numbers: 12561269, 88894095, 89017363, 89017364.

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

FF Page 228, FF tire rule 9.1.1.10.e

#38251 from Anthony Stefanelli · Rule change · TB 25-05 (2025-05 Fastrack)

neutralFF adds rocker arm and outboard suspension cars optional bias ply and VFF tires; removes front-as-rear rule, adds mixing restrictions.

In FF, GCR section 9.1.1.B.10.e, change as follows:
"Formula F shall be limited to the following tires (front tires may not be used as rears):
Dries:
Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13
Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13
Wets:
Front - Hoosier Wet or W3 Radial 44421 185/60R13
Rear - Hoosier Wet or W3 Radial 44426 205/60R13

Show 16 more lines

Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at
least one chassis end may use the following tires:
Dries:
Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick
or
Hoosier 44165 135/545-13 VFF
Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick
or
Hoosier 44170 165/580-13 VFF
Wets:
Radial wets or VFF tires listed above
or
Front - Hoosier 44165 135/545-13 VFF
Rear - Hoosier 44170 165/580-13 VFF
Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias
ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."

AS Errors and Omissions

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

neutralAS Ford Mustang GT 05-14 Restricted Prep Engine gains alternative gear ratios: 3.66, 2.43, 1.69, 1.32, 1.00, .65

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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

AS RE: Previous Letter 37695 Update

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

fasterAS Ford Mustang GT 5.0 2018- weight reduced from 3600 to 3525 lbs.

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

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

AS Cadillac CTS-V BOP Weight Change

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

fasterAS Cadillac CTS-V 04-07 Restricted Prep weight reduced 50 lbs to 3400.

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

AS 1994 Mustang Spec Line Request

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

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

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 on this page: Michael Kamalian, Thomas J Ellis, Gregory Eaton, James Jost

FF Formula F Alternative Tire Rule Proposed Clarifications

#39281 from Jay Messenger · Rule change · TB 26-01 (2026-01 Fastrack)

neutralFF clarifies alternative tire eligibility for cars homologated 1989 or earlier with rocker arm or outboard suspension on all four corners.

In FF, GCR section 9.1.1.B.10.e, change as follows:
"Alternatively, Formula F cars with rocker arm suspension (e.g., 1987-90 Reynard, Swift DB1,) and/or outboard suspension on at
least one chassis end homologated in 1989 or earlier with any combination of rocker arm or outboard suspension on all four
corners (e.g., 1987 – 1990 Reynard, Swift DB1) may use the following alternative tires. Note: This rule is intended to allow older
cars with the described suspension design to use the alternative tires. It is not to be exploited by modifying cars with push-rods or
pull-rods to meet the above requirements or by modifying either end of older cars to push- or pull-rod suspension to be eligible to
run the alternative tires. Cars that were homologated in 1989 or earlier with push- or pull-rod suspension on no more than two
corners may seek approval to run the alternative tire by utilizing the compliance process outlined in GCR section 8.1.4."

AS Restrictor Plate Change for Gen 2 Ford Coyote Engine

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

slowerAS Ford Mustang Restricted Prep engines lose 3 mm restrictor plate, from 64 mm to 61 mm.

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"

AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request

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

neutralAS Chevy LS adds Edelbrock Performer RPM 71187 intake manifold with MSD 6014 ignition and 4776 Holly carburetor as spec line option.

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)"

AS Re-Organization of AS Spec lines for 2026

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

neutralAS class Spec Lines reorganized for 2026; old table format with chassis, engine, weight, tire, and brake data deleted and moved to main rules and build sheets.

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.