can you run TBI without an HEI distributor, like if you're retrofiting it to an older vehicle? What would be messed up by not having the computer control the spark?

 

I asked this once before. I believe all you need to do is fake the ECU into thinkging it is controlling the spark by feeding the old-style HEI tach signal into one of the ECU wires, or something along those lines.

 

I think Holley calls it a 2D system. If you want to find out just put an old HEI distributor in your camaro and hook up the tach wire to the tach wire in the stock harness. With a wiring schematic it shouldn't be to hard to find the correct wire. If it runs and runs decently then it would seem to be a no brainer in a precomputor installation. Only thing I don't understand is if your going to use a GM tbi and ecm then why wouldn't you want a computer controlled distributor?

Steve

 

Because I just changed my cap and rotor on my Jeep. I don't wana pull it out and put in a 6cyl GM HEI if I don't have to. At least not yet.