454 stroked to a 496

[kenh]

I feel the manifold is probably more flow limited then the stock heads though. With its long runners it is going to dictate the power curve far before the heads. I have always wanted to send one to extrude hone to get it flowing even what the stock heads flow.

An old hot rodders trick was to seal off an end of a manifold (before V-8's) and poor in some muriatic acid and let it work. Doing this several times. The acid would eat away at the cast giving more volume.

Ken