Important if you run D-H/S or SA

[Andrew Hill]

Originally Posted by David Lee

why are you just limiting to one class, billy goes after the 273 manifold regularly. Even in this conversation.

This thread is discussing an intake manifold that is run in classes D-H.

If you're really concerned about an aftermarket block, make one or get one made, submit it to NHRA. You can do that if you really wanted to. I cannot make a manifold or get one made and have NHRA accept it.