Turning manifold from dual plane to single plane
I just put a new cam in my motor and now I want to sell it so I can build a 406. Its a 350 bored .030 right now. I sold my performer manifold awhile back and all I have now is a stock manifold. In my chevy hi performance book I saw a stock manifold that had been turned from a dual plane to single plane because of regulations. I don't want to spend money on a new manifold but I want to show a potential buyer the top end that it has. I don't think I can do that with a completely stock manifold. My cam is a lunati 292 with .480 lift. Is this work doing or not? What is the rpm limit on completly stock manifolds? What would my rpm limit be if I did this. I use 1 inch spacer too.