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Thread: LS1 INLINE Fuel pump!?!?!?

  1. #1
    Join Date
    May 2003
    Posts
    78
    What exactly pressure do LS1's need fuel pressure at?

    Fuel Pump: http://store.summitracing.com/partdetail.a...art=AEI%2D11104

    Fuel Pressure Regulator: http://store.summitracing.com/partdetail.a...art=AEI%2D13105

    Those along with a nice fuel filter -- would that work for my fuel system for the LS1?

    What pressure do I set it to?

    Can I just put a fuel pressure gauge inline through a T to see what the pressure is?

  2. #2
    Join Date
    Mar 2003
    Location
    Florida
    Posts
    1,208
    that regulator looks like mine, but mine was about 130 and i got it from jegs. the pump...wow, $420+ for a pump?!?! just get a walbro 255lph to drop in the tank/cel, got mine for $99 off a LS1tech GP. it should need ~62-65psi continuously(especially upper rpms). i think ill set mine at ~65psi. you can test the pressure at the schrader valve on the end of the rail i believe.
    Hugger Orange 99 SS Hardtop #756
    485rwhp/440rwtq SAE

    http://i83.photobucket.com/albums/j301/slmdls1/Signatures/hugger-prostar-sig.jpg

  3. #3
    Join Date
    May 2003
    Posts
    78
    Why does that pump flow a max of 45psi!?!?!? I can't find anything better. I need an inline as I'm doing a fuel cell setup, and don't want one in the tank -- do you have any other suggestions for an inline that would flow at 65 psi?

  4. #4
    Join Date
    Mar 2003
    Location
    Florida
    Posts
    1,208
    i think walbro makes a 155lph inline pump. redspeck_09 on here has one i think on his s-10.
    Hugger Orange 99 SS Hardtop #756
    485rwhp/440rwtq SAE

    http://i83.photobucket.com/albums/j301/slmdls1/Signatures/hugger-prostar-sig.jpg

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    The LS1 is supposed to be 58 lbs. For some reason these engines pick up a few extra ponies by dropping the pressure back to 56 lbs.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
    Join Date
    May 2003
    Posts
    78
    Thanks guys, between all of you, and a couple FSC buddys, i'm ditching this fuel cell and going back to the stocker tank. I have no plans to ever drop the truck on bags or anything, this is a strictly performance static drop truck.

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