The dash wiring is 2.8 stock except for the 145mph guage cluster (from an 87'). I want to put in an 87' 350 TPI. Will the engine harness plug into the fire wall connector without mods?? I have an 87 350 TPI ECM and realize the 350 TPI harness will connect no problems there, my question is at the firewall near the brake booster???

 

I don't believe you will have to change anything there. The engine harness goes to the fenderwell and passes through the body to connect to the ECM. Only if you are changing the dash harness will you have to fiddle with the firewall connector on the driver's side (which I did, and did).

------------------
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/LB9 block, ZZ3 cam and intake, TBD 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" headers, 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. Daily driver while Camaro was being put together.

 

Oh, your tach will have to be changed to a V8 type...