i have a 1956 pontiac with a really healthy 350 with a crane cam
dual plane airgap intake with a edelbrock 650 full length ceramic headers followed with a couple cheerbombs.
this car gets played with alot and goes several times to the track..i currently have dished truck pistons and a set of 305 heads...i know i was low on cash so i threw a fresh set of 305 heads i had laying around... it actually works good considering i know 305 heads are chockers and it pulls like hell at 4-5 grand but idles off and hesatates at times.i was told by a fellow racer that i dont have enough compression and should be running at least 10:1 to make it work at the cams potential cause it has a late exhaust timming to bleed off some compression and that those 305 heads are really holding it back...a performance machine shop in the area has a set of bare dart S.R heads that have been angled milled and have i think they are 49 cc combustion chambers but he said they would breath good as well as giving me 10:compression and he want $600 bare for the pair....would that be right
http://www.cranecams.com/index.php?s...51&lvl=2&prt=5