Wagon gas tank

M Body General Discussion

  1. shu-man

    shu-man Active Member

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    Does anyone know if the fuel tanks are the same for a wagon and car are the same? Is there a differents between 4 door and 2 door. Thanks
     
    Last edited: Aug 22, 2019
  2. MoparDan

    MoparDan Well-Known Member

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    I think the gas tank on the wagons hold an extra gallon of gas, but I'm not 100% sure. I believe the 2 and 4 doors are the same
     
  3. Aspen500

    Aspen500 Well-Known Member

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    The owner's manual in my '79 Aspen says:
    6 cylinder, except wagon 18 gal
    8 cylinder and all wagon 19.5 gal
    Makes no mention of a difference between 2 and 4 door.
     
  4. shu-man

    shu-man Active Member

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    The brochure I have for Lebarons say that all models hold 18 gallon
     
  5. old yellow 78

    old yellow 78 Well-Known Member

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    This one holds a lot more than that! Lol! :eek:

    67599396-770-0-2x-jpg.jpg
     
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  6. Opticon77

    Opticon77 Well-Known Member

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    In a couple thermoses wedged in the cupholders.
     
  7. Oldiron440

    Oldiron440 Well-Known Member

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    How much if the drivers full of gass?
     
  8. AJ/FormS

    AJ/FormS Well-Known Member

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    I have a 1980 Volare 2dr Sportback.
    The tank from my 79 Aspen wagon had a huge bump on top of it, which made it not fit
    I had a tank kicking around from a 77 Aspen 4 door Which also did not fit
    I had to order a new one.
     
  9. BudW

    BudW Moderator Staff Member

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    I looked in my ’80 parts manual. The fuel tank is the same for all ’80 F-body (H and N carlines) and M-body (F and G carlines) – no matter of engine size or doors on car.
    80 PM pg 14-48e.JPG
    The picture shows the hump style tank - so guess they were too lazy to change the picture?
    80 PM pg 24-49a.JPG


    As far as I’m aware, there is only 4 different fuel tanks used for F & M bodies (not sure about carbureted J-bodies, for not looked before – but suspect it to be the same).
    - ’76 to mid-year ’77 F-body (April 1, 1977) (the hump style)
    - Mid-year ’77 F-body (April 2, 1977) and all ’77 M-body to mid-year ’79 F and M body (April 2, 1979)
    - Mid-year ’79 F and M-body (April 3, 1979) to end of production ’89 (and J-body??)
    - Fuel injected Imperials

    The Hump style tanks will only fit cars with round spare tire trunks (like my ’77 wagon, which was built November ’76).
    Trunk Pan BW.jpg

    This is a picture of Ole Yellows '78 Aspen wagon (typical of all FMJ's built after mid-year '77)
    Trunk Pan OY.jpg
    A lot more trunk space! This vehicle will have the flat fuel tank in it.

    I have heard of people using the ’80 and up tank (mid-year ’79 and up) in the “mid-year ’77 to mid-year ’79” cars – but not been involved with that install so can’t say for sure. I would think they would fit, if you have correct sending unit to go along with it.

    If this doesn't answer your question, can you re-phrase and ask again?
    BudW
     
  10. shu-man

    shu-man Active Member

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    Thanks for the help