Fuel pump and sending unit Question
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Junior Member
Joined: Jul 2009
Posts: 92
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From: Cooper City florida
Car: Camaro RS
Engine: TBI 305 H.O
Transmission: 700r4
Axle/Gears: 3.42
Fuel pump and sending unit Question
Not to long ago i bought a replacement tank and fuel pump with sending unit for my 1990 camaro rs and i was wondering if i could still use the stock fuel sending unit with a new ls6 motor im droping in.
Last edited by VinnyX40; Oct 15, 2009 at 10:03 AM.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
A TBI pump won't supply sufficient pressure for an LS1 engine. You could put a different pump in the pick-up unit and use it that way, though.
Supreme Member
Joined: Nov 2008
Posts: 1,146
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From: Houson
Car: 86 Firebird
Engine: 305 SBC
Transmission: 700 R4 TCI
Axle/Gears: 3.42
Re: Fuel pump and sending unit Question
The sending unit sure. Would have to work with your fuel gauge. But you will need a stronger fuel pump. I would suggest a phone call to either Holley or Barry Grant.
Thread Starter
Junior Member
Joined: Jul 2009
Posts: 92
Likes: 0
From: Cooper City florida
Car: Camaro RS
Engine: TBI 305 H.O
Transmission: 700r4
Axle/Gears: 3.42
Re: Fuel pump and sending unit Question
is there any type of conversion fuel pump and sending unit that would fit my oem gastank and connect to the fuel lines i have.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
What fuel lines do you have? If LS1, the answer is "no".
They can be adapted to fit the 3rd gen pick-up lines, though.
The Walbro 255 pump is pretty popular among members.
They can be adapted to fit the 3rd gen pick-up lines, though.
The Walbro 255 pump is pretty popular among members.
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: Fuel pump and sending unit Question
Yeah, I was going to recommend the same thing - just find a "stock replacement" type fuel pump that'll flow 255lph, & you should be good to go. But lately I've been reading that Walbro pumps have been dying much more quickly than they should be...
...which is exactly NOT what I wanted to hear, since that's how I've taken care of fuel delivery with my car...
Can anyone confirm/deny??
...which is exactly NOT what I wanted to hear, since that's how I've taken care of fuel delivery with my car...

Can anyone confirm/deny??
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