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Dual Tanks Vs Single 40 Gallon Tank For 8.1l Swap

Discussion in 'Engine Swaps (Gas) LS, Vortec, LT1 , etc.' started by Gilderbeast, Aug 27, 2019.

  1. foamypirate

    foamypirate Full Access Member

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    Jake (Mr. Wilson)
    Truck Year:
    1988
    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - NV4500
    It is fewer components to go out...however, when that single pump goes out, you are stranded. Dual tank setup will still have another operable tank to get you home.
     
  2. foamypirate

    foamypirate Full Access Member

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    First Name:
    Jake (Mr. Wilson)
    Truck Year:
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    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - NV4500
    Oops, site is being janky/slow. Double posted
     
  3. Zoomalot

    Zoomalot Full Access Member

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    Randy
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    Silverado Shorty
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    350 Ram Jet
    Kiss method IMG_4268.jpg
     
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  4. Gilderbeast

    Gilderbeast Full Access Member

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    Brett
    Truck Year:
    1980
    Truck Model:
    K3500
    Engine Size:
    496
    Yeah id most likely install a backup pump so I could limp it somewhere.
     
  5. 1984dually

    1984dually Full Access Member

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    First Name:
    Danny
    Truck Year:
    1984
    Truck Model:
    C30
    Engine Size:
    8.1L
    When I did the 8.1 in my 84 Dually I went with 87 tanks from lmc truck. Installed 87 wiring harness and hangers with walbro pumps. Corvette filter/regulator and one pressure line to the engine. Blocked off the return line at the rail. Also new switching valve. Worked good for the last few years except the filter would drop fuel pressure. Truck being painted and i think I will install a return line and use the factory regulator. thought about installing a Suburban tank but the filler tube is the problem. Use my bed and don't want the filler in the bed. Have a thread on the swap if you would like to see what I did.
     

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