I know I'm about 3 pages too late here but FWIW... My 468 is only 8.25ish with cheap procomp heads that have been machined and fitted with Manley springs and valves and comp cams pro magnum roller rockers, solid roller lifters, Ultradyne cam, and an rpm air gap intake with a crappy edelbrock 1406 carb and it still moves pretty good. I'm not sure what the builders intentions were for my motor but it worked. I know there are more BA big blocks than mine but it is still impressive. So my point is... It's a big block and no matter how much or how little you do to it it's going to make power. And that's why I like em.


