[QUOTE=jeepin2day]what about going to 4-7 swap cam do they really help that much?
also what a preditor carb?
I also learned that power is in the heads, The heads i have are casting# 3964290
getting them ported and polished. larger valves also

I also want to thank everyone for the input, like i say this motor was my first build, and just not sure of a lot of things i just started buying parts that i thought a good race motor should have. and i have learned alot since then. just wanted to get a little more out of it...[/QUOTE.If money was no obect I would run a set of 305 cc AFR heads.
I would stick with the Holley carb.