My 67 has a 351W with Holley 750, Torker 2 intake, 280H Comp cam, flat top pistons, 1 5/8 long tube Hooker headers, 2.5" exhaust, C4 tranny with 2800 stall, 4:10 gears. The car runs very well, but I'm wanting to get more out of it, and will eventually go to forced induction. For the time being, what can of gains can I expect out of some aluminum heads and possibly a more radical cam? I have just recently got back into the muscle car scene after being out of it for 20 years, so be easy on me.
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