Just curious of what size jets some of you are running. I have a Holley HP950 (80496-1) on a 8:1 468 chev with a little cam and headers. It came with 78's all the way around. I am up to 84's in the primaries and 90's in the secondaries and my friggin plugs are still white, and I have what sounds like a lean miss at WOT (which is only 4600rpm). I have a 6-valve mechanical pump at 6psi at WOT so delivery isn't an issue.
Oh yeah, I run at 500 ft alt.