Should I change fuel pump before nitrous install?
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,009
Likes: 1
From: Springfield MO
Should I change fuel pump before nitrous install?
I'm getting a fogger system gathered up for my 90 super ram setup. Should I change my stock fuel pump or leave it alone? I plan on running a 150 shot and I figured it might be preventative maintence.
Pro
Joined: Nov 1999
Posts: 623
Likes: 0
From: Toronto, ON, Canada
Re: Should I change fuel pump before nitrous install? (AS84)
Yes,
Fuel pump is a cheap replacement and easy to change at home (about 45 minutes to change mine).
The stock pump is good for about 325-350 HP and you will need to go to another higher flowing pump to handle the possible 400-450 hp you plan on making. I suggest you install a Walbro 255lph high flow pump. Should be under $125 if you shop around.
Fuel pump is a cheap replacement and easy to change at home (about 45 minutes to change mine).
The stock pump is good for about 325-350 HP and you will need to go to another higher flowing pump to handle the possible 400-450 hp you plan on making. I suggest you install a Walbro 255lph high flow pump. Should be under $125 if you shop around.
Le Mans Master
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Re: Should I change fuel pump before nitrous install? (XTwinTurbo)
At the minimum, put a Walbro in it. GSS-307 or GSS340 is a direct replacement for the stock units.
Racer
Joined: Apr 2001
Posts: 429
Likes: 11
From: Orlando, FL
Re: Should I change fuel pump before nitrous install? (AS84)
I replaced mine also and I found out that the Holley and Granatelli brand are both identical Walbro fuel pumps. But the Holley was about 50 bucks higher. Granatelli lists thier pump for a mustang but it is the same pump as the Holley for the Chevy.
Jeff
Jeff
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Re: Should I change fuel pump before nitrous install? (AS84)
Walbro pump a must. Last yrs I installed a NX kit on my 93LT1 w/ top end package. Running stock pump and Walbro 255lph inline. On the dyno its lean out at 4200rpm. Then we replaced the intank stocker with Holley 255lph. For top end mods car with 100hp shot, you will need dual 255lph fuel pumps.
Bruce
93LT1 Conv w/ZF6
Blown D1 383ci/N2O is in the works
[Modified by Bruce, 12:15 AM 4/28/2002]
Bruce
93LT1 Conv w/ZF6
Blown D1 383ci/N2O is in the works
[Modified by Bruce, 12:15 AM 4/28/2002]
