Limited Street
- .400 Pro Tree
- HEADS UP w/ No Break out
- CLOCKS WILL BE ON
- Stock type front suspension
- No full tube chassis cars
- Back half cars permitted
- Commercially available Bolt on front clips permitted (ex Smith RaceCraft Chris Alston)
- 2”+/- wheelbase
- 275 / 28×10.5 no Ws
- Single Carburetor or Throttle body
- Any racing gas or alcohol. (M5 prohibited) any use of Nitromethane prohibited
- Cast production intake (No sheet metal)
- Single type power adder only
- -50 Leaf Springs
- –50 4150 Carb
- Small block 4.400 max bore space
- Big Block 4.900 max bore space
- No boosted Big Block combos
- 4 Cyl 2500
- 6 Cyl 2700
NATURALLY ASPIRATED
- Small Block – No Minimum Weight
- Big Block – 2500
NITROUS
- Small Block – 2600 Base
- +50 Non stock valve angle
- -50 plate
- Big Block – 3000 Base
- Single stage ONLY
- +100 Non Conventional valve angle
- -100 plate
TURBO
- Small Block only
- No reducers
- SINGLE
- 88 mm 3250 (no XPR)
- 85 mm 3150
- 80 mm 3000
- 76 mm 2900
- TWINS
- 72 mm max. 3300
SUPERCHARGED
- Prochargers
- F1A 2950
- F1C 3000
- F1R 3100
- F1X 3200 (no 12R)
- Vortec
- V30 94 2950
- V30 102 3100
- V 30 105 3200
- Whipple (No M1)
- 3.0 3100
- 3.8 Gen 5 3250
- Magnuson
- 3100
NOTE: ** Any combo shown to having a noticeable advantage will be addressed after the race for the next event.