1993 Chevy 1500 4.3 to LS1 fuel pump help

[gagliano7]

This is what i used. http://www.highflowfuel.com/i-478352...1988-1995.html

[SlowAndHighTBI]

This is what i used. http://www.highflowfuel.com/i-478352...1988-1995.html

Did this come with the proper wiring adapter?

[Mickeymotormount]

A standard Vortec injected 305/350 fuel pump and sender from a 95- to 98 is all you need. When they updated to the Vortec injection in '95, it was a multiport fuel injection system requiring a higher fuel pressure. The LS engines also use this same high pressure system to run.

It also required changing a couple wires at the pump but it was not complicated. Your original fuel pump relay can also be used but must get it's acuating power from the new PCM.

[gagliano7]

I just had to splice 2 wires inside the fuel tank when you install the new pump.It has been working great since april.

[gta87305]

They started the updated fuel injection in 96. 95 still had tbi

[Mickeymotormount]

Thanks for the correction!

[SlowAndHighTBI]

It looks like the sending unit resistance is different between the tbi and vortec models also. 0-92ohms for the tbi and 40-250ohms for the gen 2 vortec.

[Mickeymotormount]

I didn't encounter any problems with the sending unit. Got mine off ebay since my old one wasn't functioning. Came out of a Vortec injected 96 or 97. I simply put a new pump on it and reworked the wires to fit my original harness. It works beautifully. My gauge package is out of a 94.