Two Fuel Pumps
06-03-2014, 07:20 AM
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Two Fuel Pumps
I have an 87 Trans Am that has two fuel pumps. One electric in tank and a mechanical on the block. This is the carb version 305. Why did they use two pumps? The electric died and I'm wondering if you can get away with just the mechanical.
Thanks!
Thanks!
06-03-2014, 08:29 AM
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Two Fuel Pumps
The last car that had your setup, I eliminated the mechanical pump, installed a TPI pump and sending unit in the tank, and used a bypass style return regulator on the firewall to limit the pressure down to 5 psi.
06-03-2014, 09:24 AM
#6
Re: Two Fuel Pumps
The in-tank pump is a booster pump used to help prevent vapor locking.
The last car that had your setup, I eliminated the mechanical pump, installed a TPI pump and sending unit in the tank, and used a bypass style return regulator on the firewall to limit the pressure down to 5 psi.
The last car that had your setup, I eliminated the mechanical pump, installed a TPI pump and sending unit in the tank, and used a bypass style return regulator on the firewall to limit the pressure down to 5 psi.
This is my set up. Ditched the mechanical and in-tank pusher pump because my pusher pump was D.E.D..dead. 
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