As far as machine work is concerned (assuming you are going that direction), let your machine shop do all your measuring and recommending on tolerances. Since you are going to possibly put it back in your truck, go with the Vortech heads (new assemblies from most dealers, I like Sallee-Chevrolet.com). I went with a Comp Cams Extreme 4x4 camshaft (but then I have a roller block), for the low end torque and decent HP (similar setup rates 350hp@5100 and 390lb/ft@3800 (368lb/ft@3000).
Check it out...
http://www.sallee-chevrolet.com/Chev...e_4x4_350.html
Mainly, make sure your parts make a package. And make sure the package matches the intended target platform and use.
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'68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, GM HEI, CompCam Extreme 4x4, Thorley Headers, 700r4, 3.73, disc brakes and power steering upgrades.
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http://home.comcast.net/~r.landrum/w...tos.html-.html
'68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades.