How do i wire up an electric fuel pump in an originally carb'b car?
Thread Starter
Joined: Jul 2011
Posts: 695
Likes: 73
From: New York
Car: 86 Sport Coupe
Engine: 5.3 LM7
Transmission: T56
Axle/Gears: 4th gen 3.42 posi
How do i wire up an electric fuel pump in an originally carb'b car?
Hey, im looking into doing an ls1 swap in my 86. The car is currently carbed with a 305 and 700r4. For the fuel pump, how would i go about wiring up the in tank electric fuel pump? Would i have to buy a harness, or is the pump wiring already exsisting in the fuel sending wiring? Any info would be a big help, thanks
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
No, the wiring isn't there.
I've done two, and I did it differently for each.
The first I put a 4th gen LS fuel tank in and used its pump. I ran a wire from a swap fuse/relay box in the engine compartment through the passenger compartment back to the tank.
The second I bought an EFI pick-up assembly from a TGO member and installed a Walbro pump in it. That LS1 drop-out included the 4th gen fuse/relay boxes, so again I ran a wire from it in the engine compartment back to the tank through the passenger compartment.
I've done two, and I did it differently for each.
The first I put a 4th gen LS fuel tank in and used its pump. I ran a wire from a swap fuse/relay box in the engine compartment through the passenger compartment back to the tank.
The second I bought an EFI pick-up assembly from a TGO member and installed a Walbro pump in it. That LS1 drop-out included the 4th gen fuse/relay boxes, so again I ran a wire from it in the engine compartment back to the tank through the passenger compartment.
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