head to intake mismatch

[1320racer]

Originally Posted by Woodfin

Racers,

I have heard the stories of running a BBC rectangular manifold on an oval port head, which is a huge mismatch. The stories relate how such a mismatch ran well.

My question: do I need to relive the top of the port, or is it wasted time?

Larry, I say no. That said, I think you know I ran that mismatch for years, using an Edlebrock RPM dual plane manifold atop my then 650+HP 468 and it ran great. Rich Biebel aka scdiv1 over at DRR built the engine and did the fitment of the manifold. Ultimately a Brandywine aka Larry Woodward, fully ported Weiand single plane manifold ran .about 02 quicker. Best Et with the dual plane was 10.11 and single plane was 10.07 in better air.