Do you think this would be a good engine to swap into my 84 Z28 w/ the lg4, and would I be able to use my stock computer and ignition system without a chip for it to run? The engine was built for trucks by GM. http://www.paceparts.com/ht383_crate_engine.htm

 

Vortec heads = different intake manifold and no exhaust cross-over passage for the EGR. Notice the last sentence of the description: "The HT 383 should only be used in 1973 and earlier pre-emissions street vehicles or any year off road vehicles."

You could probably make it work with a Vortec EGR manifold, but you'll have to run a tube from the exhaust manifold/header up to the intake.

Check the magazine articles for the pieces by Steve Green. He built an emissions-passing 383 with Jet handling the carb & chip.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" Hedders, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere w/open diff & slipping tranny. Daily driver while Camaro was being put together.