LIMITED LATE MODEL RULES:
(BY THE 2025 NASCAR RULE BOOK WITH THE FOLLOWING EXCEPTIONS)
OVERALL CAR WEIGHT (total/right side) - CARB requirements:
1. GM 602 crate: (3000/1300) 390 4bbl / any 1” alum spacer
(3025/1325) 650 4bbl / any 1” alum spacer
2. GM 603/ZZ4 crate: (3000/1300) 390 4bbl / any 1” alum spacer
(3025/1325) 650 4bbl / any 1” alum spacer
3. Ford 347 JR crate: (3000/1300) 390 4bbl / any 1” alum spacer
(3025/1325) 650 4bbl / any 1” alum spacer
4. GM 604 crate: (3050/1350) 500 2bbl HPX or Ultra / any 1” alum spacer
5. Dillon 70cc: (3075/1350) 500 2bbl HPX or Ultra / any 1” alum spacer
6. LMSC Built (Steel Head): (3050/1350) 450 carb / 350 adapter / any 1” alum spacer
7. Chevy Spec Upgrade: (3125/1415) 450 carb / 350 adapter / .75” 2 hole non tapered 350 spacer
8. Ford 347 SR crate: (3100/1400) 450 carb / 350 adapter / .75” 2 hole non tapered 350 spacer
9. HMS Enforcer: (3100/1400) 450 carb / 350 adapter / .75” 2 hole non tapered 350 spacer
Clarification:
450 Carb is 500 top with a 350 bottom. The only 500 Tops allowed are 4412 or HP 500 with 350 bottom pt # 2300. NO modifications permitted outside NASCAR Tech Specs
SHOCKS / BUMP STOPS
- Shocks and Bump Stops will be permitted in accordance with the 2023 NASCAR RULE BOOK
- In addition, AFCO and PRO shocks will be legal WITHOUT BASE VALVES.
* Must have rocker panels on both sides of the car. The rocker panels must be of matching thickness on both sides with a minimum thickness of .025" thickness, magnetic steel. It will be mandatory by July 1, 2025.
* Maximum width of body parts and side skirts between the front and rear tires is 77 1/2". The right door and quarter panel must be flat and not concaved in.
* The rear window must have a vertical brace in it to keep it from pushing in. The rear and side windows must have all the screws / rivets in and tight.
* If any of the body components cannot be fixed, you will add 25 lbs to the right side.
