BBC head advise...Indy? Pro Comp? Eddy Victor?

So you make good power with the 452 heads then? hmm
Im thinking for 500" they are too small?
Thats my problem...I cant decide to use the 452 alumn or go bigger!! ugh

290 cfm 452 factory IRON heads.

642tq/642hp with a single 4bbl, 496ci, 10.3 CR, 309cfm @ .600" Edelbrock RPM's, small solid street roller.

I make 775HP with 342cfm @ .700" Edelbrock RPM's and a 11.7:1 CR, 451 CI stroker on 91 octane.

Like I said, ANY aluminum BB head can go into the 800 HP range. 650+ HP starts to get expensive.