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83 Z28 fuel pump assembly

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Old 07-23-2019, 07:49 PM
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83 Z28 fuel pump assembly

Restoring an 83 Z28 and down to the fuel pump. Basically it is destroyed and rusted solid. What years are interchangeable for 83? I see 85 and up but no 83. Any help would be appreciated. Part number, place to get one used or new.

Mike



Old 07-23-2019, 10:02 PM
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Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: 83 Z28 fuel pump assembly

looks like a non-original,hack-job replacement on a CFI...TPI pump is often used as a replacement on CFIs:dead-head pressure is higher on the TPI pump-but regulator controls the pressure,so works fine on the CFI.
Old 07-23-2019, 11:17 PM
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Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: 83 Z28 fuel pump assembly

Get a new tank, and get the Spectra sending unit. The other one out there for sale really doesn't have the right angle on the float arm.

Get a fuel pump kit with a Walbro 255 or an AEM/Deatschwerks turbine pump in 255 LPH. Here's a kit for a good price:

https://www.highflowfuel.com/i-10383...1985-1992.html

GD
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T.L. (07-24-2019)
Old 07-24-2019, 01:06 AM
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Re: 83 Z28 fuel pump assembly

This car was a Cross fire injection system with California emission. I need the whole unit including the fuel sender

Last edited by Harlyworkr; 07-24-2019 at 01:21 AM.
Old 07-24-2019, 01:10 AM
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Re: 83 Z28 fuel pump assembly

Originally Posted by GeneralDisorder
Get a new tank, and get the Spectra sending unit. The other one out there for sale really doesn't have the right angle on the float arm.

Get a fuel pump kit with a Walbro 255 or an AEM/Deatschwerks turbine pump in 255 LPH. Here's a kit for a good price:

https://www.highflowfuel.com/i-10383...1985-1992.html

GD
I got the tank but need the sending unit including the fuel gauge sender. I have an external pump so the pump I not the biggest concern.
Old 07-24-2019, 10:28 AM
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Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: 83 Z28 fuel pump assembly

Originally Posted by Harlyworkr
I got the tank but need the sending unit including the fuel gauge sender. I have an external pump so the pump I not the biggest concern.
Just use the Spectra for the TPI cars. Adapt lines as needed. And the later tank has the anti-slosh baffling also which is probably what you have.

GD
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