Oct. 5, 2022
The NHRA Technical Department recently made changes to the Class Guide.
Chev 68-69 396 375/412 change to 396 375/399 Nova Stk
Ford 71,73 all cougar corrected wheelbase
Mopar 64-65 and 68 426 425 race Hemi added alternate cylinder heads SS
Mopar 65-71 426 425 Hemi added alternate cylinder heads SS