Looking for more 408 pull at the big end?

I’m not sure it’s worth the time. Some guys test things on a dyno and say yep that doesn’t work. I’m sure he knows what my car and my sons car run with stock pushrod position Edelbrock heads.

What displacements? I seem to recall a stock stroke configuration.

My comments were based on where the HP peaks and the shape of the curve which is what a dyno can tell you quite easily. J.Rob