Have some questions.

But don't forget, engines back when were under rated, I can't really beleive the 340's were only 275, 360's were 300, and 383's were 330.

I really wasn't trying to compare with the crates, just trying to get some sort of base line to follow. I have 9.6:1 cr compared to 9:1, and the cam from a strongly known powerplant. I wanted to use the magnum heads for obvious reasons (didn't have the $1200. for the RT's), but had an LA block. I wanted to keep the power brakes and didn't want a cannister. I do have the 440-6 pak scoop (functional) and K&N's xstreme top, so I am moving plenty air, I'll just use the 670 and jet it as needed.