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Thread: Kind of fuel pump for Obs ls1 swap?

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  1. #1
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133
    I recommend an aeromotive 340 stealth. But it will have to be "retro" fitted. I figure if you every want to do upgrades, this fuel pump will be able to supply.
    Back Alley Motorsports 98 GMC
    -5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
    -TU1 Custom Grind cam(spec speed.inc) -799 heads
    -.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top

  2. #2
    Join Date
    Mar 2013
    Location
    Edmonton, AB, Canada
    Posts
    133
    I believe the stock fittings are M14(return) and an M16(feed) on the lines shown above.
    Back Alley Motorsports 98 GMC
    -5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
    -TU1 Custom Grind cam(spec speed.inc) -799 heads
    -.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top

  3. #3
    Join Date
    Jan 2012
    Location
    warwick ny
    Posts
    247

  4. #4
    Fuel pump is same as Grand National pump. Search for Walbro F20000169. Very cost effective, get the kit that includes sock and wiring and you're done.

  5. #5
    Join Date
    Jul 2013
    Location
    Brunswick, ga
    Posts
    25
    Quote Originally Posted by gagliano7 View Post
    Is that a return style pump like the factory one? Can you use your factory fuel lines with it?

  6. #6
    Join Date
    Jan 2012
    Location
    warwick ny
    Posts
    247
    Quote Originally Posted by baronsmith98 View Post
    Is that a return style pump like the factory one? Can you use your factory fuel lines with it?
    Yes it goes in the tank in place of the original one.

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