New Engine
 

I have the bolt on listed below and want to build a 12 sec. engine. I have the block and would like to know which heads,intake, and whatever else I should do. I would like to keep the 3.55 gears. But anything else will help me out.

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3:55s w/posi,Cold Air Induction,Mac headers,Hedderman Off-road H-pipe, MSD Ing.&wires, 65mm T.B. Hurst Short Throw Shifter,front sway bar removed,2 chamber flows,and pullys. Not to fast Not to Slow, Working on the fast part.

I'd suggest using either Canfields or the newer AFR 165s. Those seem to be doing good things for people. As for the intake, if you want good all-around, get a Holley Systemax. If you want one that will sacrifice some low end for a screaming top end (past the limiter) go with a box-type upper like a Downs or Cartech. Then there's always those BXR manifolds...if you like spending $1000 on an intake "kit" then it's a great option.

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s