mustang gas tank in 1970 maverick?

Discussion in 'Technical' started by 77maverick1, Aug 25, 2011.

  1. 77maverick1

    77maverick1 Member

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    did i read on here somewhere that an older mustang 65-67 gas tank will fit almost perfect in a 1970 maverick, if set in there sideways? i know you can fab it to work correctly, but i am wondering about the sideways thing? i have an idea but not 100% sure about it yet.
    any input would be great!!!
  2. rthomas771

    rthomas771 Well-Known Member Supporting Member

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    I had both taks side by side and I don't see how it would come close to fitting.
  3. predfan2001

    predfan2001 David in Tn

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    I wouldn't think mounting it sideways would be a good idea. It's not a perfect fit sideways anyways so modification would be required. It would be just as easy to mount it the correct way.
    Last edited: Sep 2, 2011
  4. Joe Dirt

    Joe Dirt six poppin'

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    I mounted one in my 74, I made a drop down flange and welded it in the trunk, I'm sure a 70 would be even easier. The good thing about the mustan tanks is the use the same external mounting demensions from 64.5-70 so that means you get the option of a 16,20 or 22 gallon fuel tanks and sending units are easy to get (even for efi) =)
    Last edited: Aug 1, 2012
  5. predfan2001

    predfan2001 David in Tn

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    The first pic here shows the approx. difference in the size of a Mustang tank in a 1970 Maverick (71 up trunk floor is different). The Mustang tank is wider and not as long. The second pic shows the cut I plan to make. Once removed, I'll trim several inches off, move it over and reweld it in. I'm gonna overlap the sheet metal and spot weld it with a mig sort of like how body panels are welded together from the factory. THen seal it and shoot it with splatter paint.

    Then I'll have to make 2 smaller filler panels on my metal break to fill the gaps. One last panel will have to be made to fill the gap between the tank and floor towards the back seat. I don't have a bead roller so I'm trying to find someone ro roll a few areas in that panel. When it's done I'm gonna make a vinyl cover to go over the tank area so hopefully it will have a stock appearance.

    The downside to this mod is that widening the trunk floor on the passenger side will eliminate room for a rear mounted muffler so you'll have to use an under floor muffler.

    Attached Files:

    Last edited: Sep 2, 2011
  6. maverick1970

    maverick1970 Well-Known Member Supporting Member

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    Another thing to keep in mind is the location of the filler pipe. You may not be able to shift the Mustang tank to the right like that and may need to take some out of each side.
  7. Dave B

    Dave B I like Mavericks!

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    Such a nice trunk floor to cut up just for a gas tank :(
  8. predfan2001

    predfan2001 David in Tn

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    Actually if you offset it to the right, the inlet is nearly aligned with the filler neck.

    [​IMG]
  9. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI Supporting Member

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    I agree. I have a 1970 tank if you are looking for one.
  10. predfan2001

    predfan2001 David in Tn

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    Those aren't pics of my car, they're another members car. Mine's nicer! lol

    But I've already got a new Mustang tank and I never want to face the whoas of hard to find 70 gas tanks again.
  11. Comet Fever

    Comet Fever Senior Member

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    I don't blame you, put in a new tank and get it over with. No telling how long a used tank would last.
  12. Comet Fever

    Comet Fever Senior Member

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    I'm about to put a new one in mine also but I believe my tank is still available new. (1975)
  13. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI Supporting Member

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    Yep....you can get a new one.
  14. predfan2001

    predfan2001 David in Tn

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    It might be wrong, but I compare mending an old leaky fuel tank to sticking your finger in a leaking dyke. I'm not got park a car in my garage that's had a rusted out tank even though it's been boiled out and lined. That's just my opinion. Mine will have a new tank, hoses and lines. Just to be on the safe side.
  15. Comet Fever

    Comet Fever Senior Member

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    I thought so. Remember reading about it. Thanks.
  16. Dave B

    Dave B I like Mavericks!

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    All I can add, was I bought a car that had the tank replaced with a new one 6 years earlier...and it rotted through, it was full of pin holes. That was a brand new reproduction tank.
    If you do replace it, buy a kit that lines the tank.
    If your tank has been repaired, and sealed, it should last a long time.
    I just find it sad to cut the trunk up to make the tank fit. I'd rather cut the tank to make it fit, of get a fuel cell.
  17. predfan2001

    predfan2001 David in Tn

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    But my new tank was made in Canada! ;)

    One thing about it. it this one does rot through in 6 years (doubt it though) I can order another that will bolt right in.
    Last edited: Sep 2, 2011
  18. Comet Fever

    Comet Fever Senior Member

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    I highly doubt it also. You are in Tennesee not Canada. LOL
  19. Dave B

    Dave B I like Mavericks!

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    If you look at any repop tank, they are almost all made in Canada.
    It rusted from the inside out.....plus it was in a garage.....LOL?
  20. Comet Fever

    Comet Fever Senior Member

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    Well, I bet it's better than China. As far a the other statement, I really don't believe anything you post. You contradict yourself to much.

    Sorry!

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