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Mustang/Falcon gas tank in Shoebox Ford?

Discussion in 'The Hokey Ass Message Board' started by 62rebel, Jul 21, 2012.

  1. 62rebel
    Joined: Sep 1, 2008
    Posts: 2,816

    62rebel
    Member

    i've seen it mentioned a couple of times and wondering how it's done; i can understand why, i think, as no affordable repops are available. do you guys who use them keep the fill tube inside the trunk or make a new one to reach the fender?
     
  2. paulie_boy13
    Joined: Mar 1, 2005
    Posts: 269

    paulie_boy13
    Member
    from NC

    Trunk fill, run a one way vent/roll over valve from a filler neck to outside the trunk space.
     
  3. 62rebel
    Joined: Sep 1, 2008
    Posts: 2,816

    62rebel
    Member

    do you bolt it up to the trunk floor from beneath, or hang it with straps? sorry, i just can't seem to find a clear depiction of an installation in steps.
    wondering because i've pretty much made the deal on the '51 and am selling my Falcon to help defray expenses. i have a brand new gas tank in it that i might keep to use on the '51.
     
  4. id say youd mount it like ford did in the mustang cut a huge gapping hole in the trunk floor and drop in the tank and bolt it in from the top
     

  5. EssexCoupe
    Joined: Sep 30, 2010
    Posts: 176

    EssexCoupe
    Member
    from Vantucky

    There is an outer lip on the mustang tank that is just about 1/2-inch wide with multiple holes punched for mounting. You can weld up a perimeter frame from 3/4-inch or 1-inch L channel and weld or fasten that down in your trunk pan. I shaved my gas door, so I am just setting up a fill neck inside the trunk. I attached a picture of what the mustang tank looks like.
     

    Attached Files:

  6. shoebox50
    Joined: Nov 20, 2005
    Posts: 662

    shoebox50
    Member

    mustang tank in my 50 ford.
     

    Attached Files:

  7. EssexCoupe
    Joined: Sep 30, 2010
    Posts: 176

    EssexCoupe
    Member
    from Vantucky

    Shoebox50 - I love your car man.
     
  8. That is a nice clean look.
    I know this is an older thread, but was wondering how you vented fuel tank?
    Did you also build a firewall?
     
  9. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,910

    gimpyshotrods
    ALLIANCE MEMBER

    We put Mustang tanks in just about anything they will fit in. They are a real problem solver. I prefer the filler neck to be outside the vehicle, but in either case, I use the stock filler neck (shortened for inside, extended for outside), and weld on a 3/4" bung and a hose barb, available at most plumbing houses, for the vent, just below where the cap is. To that, I attach fuel safe hose, and run it to another bung and barb, welded to the floor, in the center, away from the exhaust. 3/4" may sound large, but California's vapor recovery compliant gas pumps often pump at such a rate that they will back-flow, and and shut the pump off, or worse, spill on the bodywork, or in the trunk, if the vent is not large enough.

    Alternately, you could get a 3/4" NPT coupler, and saw it in half, to make two weld-on bungs. Just remove the plating before welding.

    Every vehicle I build that has a fuel tank that is inside the envelope of a closed body, or a tank that comprises a part of the envelope of the body, like a Mustang tank, I install a fully-sealed bulkhead, and package tray. Vehicle fires are rare, but they are VERY, VERY FAST.

    This might be overkill, but as the builder, I have to have my customer's safety in mind.
     
  10. snopeks garage
    Joined: May 25, 2011
    Posts: 555

    snopeks garage
    Member
    from macomb MI

     

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