'87 LG4 fuel tank sending unit
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Joined: Jan 2008
Posts: 111
Likes: 0
From: Central OH.
Car: 70T/A, 87Formula, 02Hawk, 06 GTO
Engine: 400, 350, LS1, LS2
Transmission: M21, 700r4, T56, 4L65-E
Axle/Gears: 3:55, 2:77, 3:45, 3:46
'87 LG4 fuel tank sending unit
Anyone know if I can replace the sending unit in my 87 LG4 car (electric helper pump) with a sending unit without the electric pump? I know what the electric pump is for, to keep a small amount of pressure on the line to the mech. pump to avoid vapor lock, but I am running a bigaz Carter and I don't think I will have starvation issues. I'm just not that familiar with the fuel tank sending unit campatability. ie, is it a direct swap or will there be some fabrication. Anyone done this?
Joined: Mar 2000
Posts: 43,187
Likes: 43
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
It's a direct swap.
If you read the sticky "Carb gas tank pickup", you'll see that you don't even have to replace the sending unit.
Personally, if I had the in-tank electric, no way would I take it out. In fact, I'll trade you a mechanical for an in-tank electric pick-up if you like.
If you read the sticky "Carb gas tank pickup", you'll see that you don't even have to replace the sending unit.
Personally, if I had the in-tank electric, no way would I take it out. In fact, I'll trade you a mechanical for an in-tank electric pick-up if you like.
Thread Starter
Member

Joined: Jan 2008
Posts: 111
Likes: 0
From: Central OH.
Car: 70T/A, 87Formula, 02Hawk, 06 GTO
Engine: 400, 350, LS1, LS2
Transmission: M21, 700r4, T56, 4L65-E
Axle/Gears: 3:55, 2:77, 3:45, 3:46
Re: '87 LG4 fuel tank sending unit
Thanks five7kid,
Yeah, I did read the sticky after I posted, sorta feel a little sheepish. Well, I am kinda shy about buying a new in-tank pump based on my experiences with replacement parts lately. I'm just afraid it will break in a year and I have to drop the tank again and so on. I do like wrenching on our '87 Formula, but I like to concentrate on improvemnts not replacing cheap chinese parts. Uh, any reason that you would prefer the in-tank helper pump pick-up? Other than the obvious reason that it helps with vapor lock?
Yeah, I did read the sticky after I posted, sorta feel a little sheepish. Well, I am kinda shy about buying a new in-tank pump based on my experiences with replacement parts lately. I'm just afraid it will break in a year and I have to drop the tank again and so on. I do like wrenching on our '87 Formula, but I like to concentrate on improvemnts not replacing cheap chinese parts. Uh, any reason that you would prefer the in-tank helper pump pick-up? Other than the obvious reason that it helps with vapor lock?
Last edited by csmith3; Mar 8, 2009 at 07:00 PM.
Joined: Mar 2000
Posts: 43,187
Likes: 43
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
Pusher electric in or back by the tank is superior to a mechanical trying to suck gas 8 feet along a torturous path past high heat sources.
The chances of long life increase when the Chinese aren't involved. Buy an American-made in-tank electric.
The chances of long life increase when the Chinese aren't involved. Buy an American-made in-tank electric.
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