I would like to delete the smog system and go to carb. What about wiring? I would like to delete the ECM completely. What is the easiest way to do this? I have access to an engine wiring harness from a carb truck and fuel tank to run a mechanical pump. Will the older harness work?

 

FYI the harness I can get is from a 1986

 

You will need to modify the fuel delivery system to lower the pressure as the mechanical pump won’t work if the motor doesn’t have the cam lobe. I think I have heard the harness will work but probably easier just to cut out what you have in your original harness that is not needed. The distributor will need to be changed back to an older style with the additional box as well.

 

Smallblock mopars have a bolt-on eccentic that goes on the front of the timing gear.

https://www.summitracing.com/parts/dcc-p4120484