Quote:
 w/ patrick on the intake manifold choices. With the voodoo 60302 being a mild cam and ground on a 112LSA, you wouldn't see a huge difference between hp manifolds and cheapie headers.
I bet you would.....
Dulcich has shown a gain of at least that much on a number of "resto to rad" builds in mopar muscle on a dyno....granted it's westech's dyno that has been accused of being "happy", but look at the relative gain, since it's pretty much back to back pulls on the same dyno....
cleaned up, ported, extrude honed, etc HP manifolds will probably net you 1 or 2 HP over untouched.....heck, on the 300HP magnum crate motor, he saw 5hp difference between 318 and 340HP manifolds, and 10-20HP on top of that with various headers, and similar torque improvements throughout the RPM range.
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