I have an original 350,350 horsepower Corvette motor. I want to make some more horsepower without changing the block,heads,intake,exhaust manifold, and carb. So I am willing to change crank (possibly stroke), rods, pistons, cam, rockers, lifters. My real question is what is the limiting factor in flow? Exhaust manifolds? Intake? Is stroking it going to make a big difference if those aren't going to be able to flow? I am putting in a different cam, how big can it go with stock heads not ported? 10:1 compression is where it will be and it is a quad jet. I am aware of the limitations by not changing key components obviously,it just needs to appear stock as it is all original.