Hello I'm putting a 350 into my 87 firebird formula it originally had the 305 carburetor engine with the coil divorced setup and I want to switch to an HEI coil in cap setup and wanted to know what to do about the wires I know the pink and white are tach and ignition but what do the rest do??

 

The flat four connector is for ecm reference pulse.

 

Since I'm going with a vacuum advanced HEI and not the electric advanced can those ecm wires be eliminated

 

Yes, I'm assuming your removing the ccc

 

Yes I'm going with a holly with the kick down adapter