85 gmc 1500 engine wiring

[gigmo]

i have an 85 gmc 1500. was a 4.3. i'm putting 383 stroker in it. Does anyone have a wiring diagram on how to wire the starter,alternator and distributer? it had a computer box for that motor i think it was for the 4.3. can anybody shed some light here? thank you.

 

[Sad Sack]

1980 Chevy C & K Series and GMC 1500 - 2500 - 3500 Color Wiring Diagra

Covers 1980 Chevy C & K Series and GMC 1500 - 2500 - 3500 trucks Diagram set has two 11" X 17" sheets placed side by side to show complete truck. Includes PCB for trucks with gauges & indicator lights Includes power windows, locks, air conditioning, cruise and dual gas tanks Factory wire colors...

classiccarwiring.com

...really nice especially for poor eyes.

 

[Ricko1966]

i have an 85 gmc 1500. was a 4.3. i'm putting 383 stroker in it. Does anyone have a wiring diagram on how to wire the starter,alternator and distributer? it had a computer box for that motor i think it was for the 4.3. can anybody shed some light here? thank you.

You 383 should wire in almost identical to your 4.3. If there was any computer involved it would have been for knock sensor ignition. If there is a 4 wire connector going through the firewall behind the glove box that's just knock sensor. Look for a write up on eliminating ESC. that will straighten out distributor wiring. Alternator,oil,pressure,starter,temperature,air conditioning. No change. Leave knock sensor wire in front of the starter unpluged.