with that said.... the cam is way to small and use the 64cc head with atleast a runner of 180cc. most out of the box 180cc heads start to crap out at .575-.600 lift. i would use a small roller cam not a flat tappet. push the compression to 11to1 with the right cam and you can add some octane booster yes it works. this is a engine i built for a guys vette last yr. the heads were afr 180cc, small roller cam, victor intake,750dp, comp was 10.82to1. rods eagle, crank stock forged. don't use a hv oil pump all they do is suck the oil out of the pan. run a 6-7qt pan so theres no oil problems. on the dyno most small block chevy will pull all the oil out of the pan with only a 5qt pan. the heads will have to be setup for a roller if you go that way. i used stud gridles for the valve train to. the engine made 415hp and 542hp on a 100shot of nos...good luck if you what the cam specs i will have to look them up. i think it was a small soild roller like 570lift and 258-260@.050duration...