How about a 455...60 over....#64 heads.....performer intake with Rochester quadrajet.....RA IV cam....dual point ignition....hedman hedders???? Horsepower??? Somebody told me that with those heads I'm up near 11:1 compression...any truth??
Thanks Roy
Not sure on horsepower, but depending on what else you've done to the block and heads the CR shouldn't be that high. If they are 87cc heads, .060 overbore, standard stroke, standard 6.7 cc dish piston, deck height is .020, gasket thickness of .039, CR would be 9.97:1. If the heads or deck have been milled the CR can go up quickly.
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69 Firebird, .060 over 455, UD solid roller 254/262 @ .050, Scorpion rockers, home ported 6X-4 heads, Holley 850 DP (bone stock), Holley SD intake, with Summit 3 inch x-pipe and goerlich Xlerator mufflers. 12.27 @ 115mph.
02 Midnight Blue LS1 Ram Air Trans Am WS6 (440 rwhp)
http://firstgenfirebird.org/show/closeup.mv?CarID=642
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