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Thread: In tank fuel pump

  1. #1
    P31 Pursuit Car Brown_Muscle's Avatar
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    Default In tank fuel pump

    Hello- In the near future I am looking to get the Holley Sniper fuel injection system. They can come with an external pump. However I was wondering how hard it is to put a stock pump into my existing fuel tank and what other modifications would need to be made to make it work? Or do I need a whole new tank, pump, and sending unit? Would it be easier to do the external unit?

    Thanks
    -Phil



    +1982 Ford LTD-S Police Car. 351w, GT40 Heads, Edelbrock 1906 Carb, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, Baumann Shift kit.

    +1975 Maverick- Fuel injected 302, Trickflow 170 heads, XE270 cam, explorer intakes, 24# injectors, custom tune. T5 transmission, 3.55 Yukon Trac-Lok rear.

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    Member of the Orb Alliance packman's Avatar
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    If your tank is the same shape as the boxes up to '87; and the sending unit and pump/pickup are in the same locations; you could reference the Fuel Pump Upgrade Sticky in this section. It may be useful if those variables are the same for your LTD.

  3. #3
    I'm an air-conditioned gypsy gadget73's Avatar
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    The master parts manual does show a different fuel tank for EFI vs non-EFI. I don't know how different they really are, other than the non-EFI one claims 20 gallons and the EFI one is 18. So there it is, the infamous 20 gallon fuel tank.

    I can't find a listing for the retaining ring used to hold the pickup on the non-EFI cars so not sure if the hole size is the same. Worst case, new tanks aren't that terribly expensive.

    86 Lincoln Town Car (Galactica).
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    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

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    Member of the Orb Alliance packman's Avatar
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    If you remove your tank; you might have to put new strap studs back in. That's what happened when I replaced my tank. When I went to wrap the straps around; they wouldn't match up to the original stud. I think Ford strapped the tanks in, and broke the excess off of the studs. Just something to be aware of.

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    Fastest Box In South Jersey 86VickyLX's Avatar
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    Your gas tank will not support a fuel pump. Your gauge sending unit is also your feed and return line for your mechanical fuel pump. The intank pump is mounted on the trunk side of the tank. which your tank clearly doesn't have. You will need a 83-89 sedan gas tank. You will also need a different gauge sending unit or a means to seal the fittings on the old sending unit.

  6. #6
    I'm an air-conditioned gypsy gadget73's Avatar
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    standard EFI sending unit should do it. That would be more reliable than trying to seal off the pickup I'd think.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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    P31 Pursuit Car Brown_Muscle's Avatar
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    Thanks for the stud advice!

    So sounds like I should buy a new tank, do the higher flow fuel pump, and somehow acquire an EFI sending unit (do they sell those new?). I'm guessing I just use EFI hose to connect it to my existing hard lines. Do stock pumps run via a relay, or direct wire?
    -Phil



    +1982 Ford LTD-S Police Car. 351w, GT40 Heads, Edelbrock 1906 Carb, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, Baumann Shift kit.

    +1975 Maverick- Fuel injected 302, Trickflow 170 heads, XE270 cam, explorer intakes, 24# injectors, custom tune. T5 transmission, 3.55 Yukon Trac-Lok rear.

  8. #8
    Fastest Box In South Jersey 86VickyLX's Avatar
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    Quote Originally Posted by Brown_Muscle View Post
    Thanks for the stud advice!

    So sounds like I should buy a new tank, do the higher flow fuel pump, and somehow acquire an EFI sending unit (do they sell those new?). I'm guessing I just use EFI hose to connect it to my existing hard lines. Do stock pumps run via a relay, or direct wire?
    They don't sell the efi sending units new. That would be a junkyard or ebay NOS item. The stock pumps are controlled by a relay. Will need to get creative with the lines off the tank to go to the original lines.

  9. #9
    Wagon Addicted Tiggie's Avatar
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    Are you doing the return style or returnless Sniper system? Returnless Master Kit seems to include an internal fuel pump that you can just add to your existing tank.
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  10. #10
    I'm an air-conditioned gypsy gadget73's Avatar
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    wonder if you could use a 90s tank with the front mount plate. Might be slightly easier to connect things, and you can get those assemblies new. Need to verify if the fuel gauge sender range is the same tho.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  11. #11
    Fastest Box In South Jersey 86VickyLX's Avatar
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    Quote Originally Posted by gadget73 View Post
    wonder if you could use a 90s tank with the front mount plate. Might be slightly easier to connect things, and you can get those assemblies new. Need to verify if the fuel gauge sender range is the same tho.
    The resistance value changes the opposite way and values are different.

  12. #12
    P31 Pursuit Car Brown_Muscle's Avatar
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    I'm doing the return style. This is all good info. I always prefer to do it once, and do it right.
    -Phil



    +1982 Ford LTD-S Police Car. 351w, GT40 Heads, Edelbrock 1906 Carb, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, Baumann Shift kit.

    +1975 Maverick- Fuel injected 302, Trickflow 170 heads, XE270 cam, explorer intakes, 24# injectors, custom tune. T5 transmission, 3.55 Yukon Trac-Lok rear.

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