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Thread: Fuel Pressure

  1. #11
    Join Date
    Nov 2007
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    Pittsburgh, PA
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    the setup can only regulate so much flow/pressure going beyond what it was manufactored for will have side effects. its a 20 dollar item its not the answer to everyones build
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

  2. #12
    Join Date
    May 2008
    Location
    Crowder, OK
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    It was 70 psi before the Walbro was put in... Stock pump.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  3. #13
    Join Date
    May 2009
    Location
    Plainfield, IL
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    They are like 110 bucks even on a stock pump, he was pushing 70psi.... a regulator is supposed to regulate, not just cut down a %. If I put a walbro behind my factory return style regulator...I'm almost positive my pressure wouldn't jump up 8psi.


    The fact that SOME people are running the SAME setup, has to mean something is hooked up wrong/ wrong with this filter. So instead of telling him to spend more money, I'd personally like to figure out why, if for no other reason, someone else can learn from it in the future.
    blown transmissions are about as useful as 97% of the guys on this forum

  4. #14
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I put the Corvette filter on 3 vehicles and they all were right at 60 psi with a walbro 255lph pump. Not sure what your issue could be unless maybe you have the filter installed wrong or you have restriction in the return line.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #15
    Join Date
    May 2008
    Location
    Crowder, OK
    Posts
    8,005
    Vette regulators are 40 bucks tops. Other aftermarket adjustables are higher. Either way. There's an issue somewhere to be hitting 80 psi. My walbro in my 08 was hitting 70s when voltage was increased. His shouldn't do that. Something is wrong.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  6. #16
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I am assuming you have the feed from the tank going into the 3/8 fitting and the return flow going to the tank in the 5/16" fitting and these two are both on the same side of the filter?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  7. #17
    Join Date
    May 2009
    Location
    Plainfield, IL
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    2,036
    yes... the 2 male fittings are going into stock lines.... the male fitting of the rail is going into the female fitting of the filter. The rail is 3/8. The filter had a 3/8 female on one side, 3/8 male on other, and 5/16 male on same side. I put the 3/8 on the top line (which had the 3/8 from factory). I'm going to flip it around tomorrow and see what happens, should only take 10 seconds. If that doesn't work, we'll try another filter.


    Dealer wanted 140 for filter, Autozone wanted 110, advance was 80, oreillys was 50.
    blown transmissions are about as useful as 97% of the guys on this forum

  8. #18
    Join Date
    May 2008
    Location
    Crowder, OK
    Posts
    8,005
    Rock Auto sells them for 30$

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  9. #19
    Join Date
    May 2009
    Location
    Plainfield, IL
    Posts
    2,036
    good to know. it was kind of a last minute thing. This one has a 1 yr warranty...may come in handy.
    blown transmissions are about as useful as 97% of the guys on this forum

  10. #20
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
    Posts
    3,581
    or ditch the idea and just get a crossover made for the stock system. its better system to work with anyways
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

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