C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fuel pump upgrade.

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Old May 30, 2002 | 09:46 AM
  #1  
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Default Fuel pump upgrade.

How do you get at the fuel pump in a C4 for upgrade/replacement? Which pump do you guys recommend. I'm spraying a 125HP shot and am wondering about pump capacity. Thanks.
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Old May 30, 2002 | 10:20 AM
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Default Re: Fuel pump upgrade. (honas)

This is the in-line pump that comes with the NOS ZR-1 kit. It is the same pump that is sold for the Mustang Stage II system with the addition of a bypass that allows fuel to flow around the pump when the system is not armed.

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Old May 30, 2002 | 11:59 AM
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Default Re: Fuel pump upgrade. (honas)

Depending on the rest of your setup, I would just put a Walbro GSS307 or GSS340 pump in the tank to replace the stocker. They are 255lph pumps that will support 550hp easily.
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Old May 30, 2002 | 02:00 PM
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Default Re: Fuel pump upgrade. (Vette92)

How do you get at the pump to change it?
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Old May 30, 2002 | 02:04 PM
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Default Re: Fuel pump upgrade. (honas)

The in-tank pump is accessed through the top. Take off the filler door and the seal and the you will see the fuel tank supply lines. Unbolt that assembly and the whole shooting match comes out.
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Old May 31, 2002 | 07:22 AM
  #6  
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Default Re: Fuel pump upgrade. (RatRacer)

Thanks alot!
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Old May 31, 2002 | 11:27 AM
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Default Re: Fuel pump upgrade. (RatRacer)

i justed used my stock fuel pump when i ran 150shot
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Old May 31, 2002 | 10:02 PM
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Default Re: Fuel pump upgrade. (Vette92)

Where is the best place to get a Walbro pump? What is the average proce?
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Old Jun 1, 2002 | 10:20 AM
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Default Re: Fuel pump upgrade. (honas)

Where do you guys get these Walbros.
Nobody knows anything here about Walbro, I have asked over her but NO !
I really need your help on this and what is the product number of the 255 lph (67 gph) Holley pump that replaces the stocker......


[Modified by Finland, 7:37 AM 6/2/2002]
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Old Jun 3, 2002 | 02:13 AM
  #10  
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Default Re: Fuel pump upgrade. (Finland)

Try here:
http://www.racetronix.com/
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Old Jun 4, 2002 | 12:22 PM
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Default Re: Fuel pump upgrade. (FrankD)

http://forums.corvetteforum.com/zerothread?id=313110
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Old Jun 4, 2002 | 08:32 PM
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Default Re: Fuel pump upgrade. (Vette92)

http://www.cottonsperformance.com

Ask for Jack. He runs them on sale for $89 every couple of months.

Tell him Robert with the TTA from Augusta sent ya.
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Old Jun 7, 2002 | 03:12 PM
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Default Re: Fuel pump upgrade. (Hi-psi)

Why just go for a pump alone? You are only fixing part of the problem.
Here is a much better answer... http://www.racetronix.com/Racetronix...t-GSS307M.html
These are available through ARE and other sponsors of this board.

Jack :cool:
Racetronix


[Modified by Racetronix, 7:13 PM 6/7/2002]
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