[Half-Inch Stud]

Originally Posted by Formula jg

"My bet would be the bigger runners of the RPM would loose a little to the iron or HO intake."

X2 I just went from an unmodified T2(+1" spacer) to head gasket matched RPM (no spacer-clearance issues)and lost approx. 5mph. No other changes were performed and the idle, cruise and wot afr was identical on both intakes.

Boy, would like to hear you swap on a hogged Torker I and show gain ((((based on improved flow trajectory past the pushrod bulges, to prevent turbulent flow)))) over Torker I I & RPM.

Alleged, supposed, and suspicious that Manifold-Head combos are hit-or-miss depending on the pushrod bulge & effect on Head's intake runner turbulence situation.