Now that I am putting an LS1 in my 71 chevy truck I need to know what fuel pump I should use and where it needs to be mounted. Is it ok to mount it any where in the engine compartment?
Now that I am putting an LS1 in my 71 chevy truck I need to know what fuel pump I should use and where it needs to be mounted. Is it ok to mount it any where in the engine compartment?
I would mount it as close to the fuel tank as possible. The pumps aren't that great at lifting/pulling the fuel, they're designed mainly to push it.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Ok cool...wil I have to change the sending unit?
Are you using the 71 fuel tank that is mounted in the cab behind the seat? You should be able to use an inline pump and keep everything from the stock tank internals. I would put some kind of filter between the tank and pump on that old of a tank unless it's been replaced recently.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
<div class='quotetop'>QUOTE(RedHeartbeat @ May 30 2007, 02:14 PM) [snapback]95267[/snapback]</div>Are you using the 71 fuel tank that is mounted in the cab behind the seat? You should be able to use an inline pump and keep everything from the stock tank internals. I would put some kind of filter between the tank and pump on that old of a tank unless it's been replaced recently.
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Yeah I am using that tank. I should be able to just cut the lines and splice in right.
I don't know what the stock lines are like, but if your truck had a carb before, odds are you have a series of rubber lines along your fuel system that you'll want to change for FI hose. You can find high pressure hose & adapters from Summit, Jegs, etc. Braided lines look a bit better (cosmetic). I had a mix of hard lines & rubber lines. I used as much of the hard lines as I could.
As for the sending unit, mine was not spliced into the main engine harness. It went straight from the tank to the fuse block. Luckily, Autometer made a gauge that conforms to a "general" gauge spec for GM. No swap out necessary. My truck has an all-in-one cluster though. I don't remember what the pre-80 trucks' clusters look like.
5.3L '86 Silverado (E/T: 14.37s @ 94mph) - First Time Out!Test-n-Tune (Nov 23, 2008) - 13.65s @ 98mph
Well I checked my fuel lines and they are metal all the way to the engine compartment. but it stops at the compartment and then from there it is rubber. Can I cut some of the line out and install the fuel pump and filter were I cut the metal line out??? I am thinking I can so I will unless some one tells me other wise.
The fuel pump will will work best in the tank. If you have to go inline, then as close to the tank as possible. Also if you can get it below the fuel level it will work better. If it ever starves for fuel, then the fuel pump will be toast.
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
Thanks for the input
Does anyone know where to get a fuel pump rated at 60 psi? I don't want to get one that is to much more than that because then I need to spend more money on a fuel regulator. I am getting low on funds.
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