Yeah, there are a lot of guys with 463, 464 CID engines, and like me they buy the internals from vendors who have have built a number of them almost the same. Maybe different cams rocker ratios and such. When I did mine it seemed everyone was pushing large stroke cranks with Chev size journals so they could use the cheaper BBC rods, bearings etc. I decided to stick with the Pontiac sizes. One thing I have noticed is a number of builds almost the same as mine, cid, heads, CR etc, that have no issues with detonation and I've been fighting with it since I built. I've addressed fuel/air, heat, timing everything I can do but.. Maybe it was the lifters not opening the valves soon enough and closing the intake too soon. Find out when I get this back together. Talked to a few of them who ended up with cranking cylinder pressuers of around 190-195 and mine is 210 straight across.

Cliff told me last month he has the Crower HIPPO solid roller and the enduro stainless rockers in his engine now. I don't really care what brand I put in, as long as it isn't comp, and I know that paying more money for a part doesn't necessarily make it better. What I do want is to buy some components put them in, have them work as they are supposed to and not worry about them failing and costing me thousands more $$$.

If I have to tear this engine down again I just may throw it and the car into the chuck.
I hope I don't sound too pst-off