Engine rules for stock

[SSDiv6]

Originally Posted by Coleydog

Wondering if NHRA has a complete breakdown on what can-cannot be done to an engine? MORE than what’s in the general rule book. I’ve asked about certain things from current racers but was told one can’t do that, i didn’t see any reference in the ‘book’ on that.

There is not a perfect rule book.
The NHRA rule book is quite clear about what is legal.
However, they cannot account for creativity, interpretation, and intent.