4-30-20 day for the 430 CanAm aluminum big block Chevy

[JoeC]

its difficult to keep track of all the rules as they changed them a few times

here is a one quote ...

"In 1982, the NHRA did away with the weight break system and implemented a 2,350 pound minimum weight, 500 cubic inch maximum rule across the board, due to the popularity of the Mountain Motor IHRA Pro Stock cars, which have unlimited displacement."


I remember reading that the engine displacement was well over 500 cu in with the tall deck blocks. At one time they called them "car blocks" and "truck blocks" and the tall deck blocks had to carry a 100 pound weight penalty

in 1972 some people were still running 1969 Camaros as you can run a car up to 3 years old