LIMITED LATE MODEL RULES:

(BY THE 2023 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 spacer  

8. Ford 347 SR crate: (3100/1400)               450 carb / 350 adapter / .75” 2 hole non tapered spacer

9. HMS Enforcer: (3100/1400)                     450 carb / 350 adapter / .75” 2 hole non tapered 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.