We scooped a little out here and a little bit out there. I have to measure some port volumes in the EQ heads next week, when I do, I'll remeasure the RPM heads.
Thanks, just curious as a friend has installed some of the 325cc runner procomp heads on a 458ci/440. They flow only a few cfm more than what your Edelbrocks did, but i am assuming yours are a fair amount smaller cc wise and more efficient.