ls1 fuelpump third gen conversion????
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Joined: Apr 2011
Posts: 92
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From: Harlingen,Texas
Car: 88 Iroc ls1 swap
Engine: ls1
Transmission: 4l60e
Axle/Gears: original disc
ls1 fuelpump third gen conversion????
have a little problem figuring out what pump i need for my 3rd gen conversion... have the regulater and the lines got them from hawks... just cant seem to find out what pump i need??? any advice would help...
Joined: Jan 2009
Posts: 456
Likes: 12
From: New York
Car: 1990 GTA
Engine: 350
Transmission: 700R4
Axle/Gears: 3.23
Re: ls1 fuelpump third gen conversion????
Or you can use the GM Syclone one, parts# 25163473 or the Ac-delco part# ep381, its rated at 50gph at 55psi.
Thread Starter
Junior Member
Joined: Apr 2011
Posts: 92
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From: Harlingen,Texas
Car: 88 Iroc ls1 swap
Engine: ls1
Transmission: 4l60e
Axle/Gears: original disc
Re: ls1 fuelpump third gen conversion????
thanks ive heard about that walbro 255 .... whats the diffrence between gss340 and gss340m????
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Joined: Jun 2001
Posts: 278
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From: new phila, oh
Car: 1990 RS
Engine: LS1
Transmission: T56
Axle/Gears: 3.73 9 bolt
Re: ls1 fuelpump third gen conversion????
There is a group purchase on ls1tech for a Walbro 255 for like 105 shipped I think. Might want to check those out. Probably cheaper than GM stuff.
Thread Starter
Junior Member
Joined: Apr 2011
Posts: 92
Likes: 0
From: Harlingen,Texas
Car: 88 Iroc ls1 swap
Engine: ls1
Transmission: 4l60e
Axle/Gears: original disc
Re: ls1 fuelpump third gen conversion????
thanks everyone!!!!!! just got my mounts in from hawks.....
Joined: Feb 2001
Posts: 13,740
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Joined: Feb 2001
Posts: 13,740
Likes: 551
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Joined: Jan 2009
Posts: 456
Likes: 12
From: New York
Car: 1990 GTA
Engine: 350
Transmission: 700R4
Axle/Gears: 3.23
Re: ls1 fuelpump third gen conversion????
Last edited by gp90gta; Jun 5, 2020 at 12:55 PM.
Joined: Feb 2001
Posts: 13,740
Likes: 551
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
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Joined: Sep 2007
Posts: 397
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From: The ******* of Texas
Car: '89 Firebird Formula
Engine: TBI 305
Transmission: T5
Axle/Gears: 10-bolt, 3.42s, Torsen diff.
Re: ls1 fuelpump third gen conversion????
The fuel pump for the '96-'98 Vortec* pickups is a 4-bar (58 psi) pump.
That's what I'm going to use.
*To me, these will always be the "Vortec" engines; everything else is an LS.
That's what I'm going to use.
*To me, these will always be the "Vortec" engines; everything else is an LS.
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