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What kind of Hp are the FAST guys making with manifolds?

I also don't see any reason to NOT use a stroker. Total Hp may be the same, but with a stroker, you'll get that Hp at a much lower RPM and will be easier on the parts inside the engine



I agree.

3.75-3.91 stroke won't hurt the budget and won't cause extreme stresses on the bottom end.

Plus the final displacements with either of those will be near enough to 440CI, which is what the stock heads were designed for.

Going to 484 or 500CI IMHO is a whole different ballgame....