I have a 87 Iroc z28, and I pulled the tpi engine in exchange for a small block stroker engine. All of the stock wiring harness from the ecu have been removed and the wires from the bcm are still here ie, lights and blinkers and horn etc. Now Im in search for a simple way to route the fuel to the engine using a MECHANICAL pump. All help is greatly welcomed.

 

Why not just hot wire the electric pump, and install a fuel pressure regulator before the carb? Or does the pump not work?
The in-tank pump will be a restriction if using a mechanical pump, unless you go inside and bypass it.

 

o.k. That was one of my questions the in tank pump can be hot wired effectively. thats a good to know just gotta find out what wires are what. I know two of them are for the fuel gauge but what two dont know. I have a Haynes manual somewhere. Thanks.

 

Your original oil pressure switch had an orange wire, and a light blue wire (in addition to the gauge wire). The orange one was a power supply from the fuel pump relay, and the light blue wire went to the pump. You can tap into the light blue wire, and hook it up to a keyed power source.

 

So just put keyed power to the light blue wire?

 

check this out and go to the year of your car.

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