Missed on this combo?

RAMM said
It was pretty good HP but the torque was really really weak (for a 4" arm) which means the cylinders were not getting filled-period. The SuperVictor is a sensitive intake that likes the port flange to be LARGER than the head port especially on the floor--I leave a .075" step/mismatch-this helps torque. Take a look at what happens to the Big Chevy guys when they use the "wrong" intake. This is why I never get too worked up over port matching--it usually isn't worth the time on lower RPM , street/strip stuff. J.Rob
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Wow. That's very surprising to me. I never thought the intake port should be bigger than the head. I guess I just picture the fuel air mix crashing into the "step" on the head and pooling or something...

Something else I learned here.

Torque. Yeah. That was the only reason for the switch of heads. I could easily have lived with 560 horsepower, but like you said, with a 4 inch stroke it was just weak as hell down low. Un usable in my mind.