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Help ID this rear diff

Discussion in 'The Hokey Ass Message Board' started by sidsgarage, Nov 16, 2025 at 3:05 PM.

  1. sidsgarage
    Joined: Aug 28, 2009
    Posts: 32

    sidsgarage
    Member

    I tried to do an image search online, the numbers on the rear were small and painted over so I couldn't decode by that. Anyone have an idea? Sorry for the bad lighting under the car.
     

    Attached Files:

    chryslerfan55 likes this.
  2. Moriarity
    Joined: Apr 11, 2001
    Posts: 37,252

    Moriarity
    SUPER MODERATOR
    Staff Member

    moved to the main board, the antiquated forum is for 65 and older non automotive collectibles
     
    chryslerfan55 likes this.
  3. 1934coupe
    Joined: Feb 22, 2007
    Posts: 5,252

    1934coupe
    Member

    57 - 64 Olds/Pont. 3 rib ham probably 64. A great rear, if your***** like me I wouldn't run anything else.

    Pat
     
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  4. Mr48chev
    Joined: Dec 28, 2007
    Posts: 35,926

    Mr48chev
    ALLIANCE MEMBER

    The flange is older Mopar. It covered a lot of years and this is the style (maybe not the size) of univeral joint that it uses. The three speed overdrive that I have that came out of a 65 Dodge pickup that I pulled the 330 Desoto hemi out of has that style of U joint. Screenshot (1945).png
     
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  5. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,678

    F-ONE
    Member
    from Alabama

    It looks to me like 1949-51 Ford “Shoebox” hypoid.
     
  6. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,312

    Johnny Gee
    Member
    from Downey, Ca

    What’s the wheel bolt circle diameter?
     
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  7. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,504

    gimpyshotrods
    ALLIANCE MEMBER

    Shoebox Ford, mechanics u-joint (Neapco 1-2134).

    Olds and Pontiac rear center sections have sharper, more distinct ribs.

    Ford ribs here look softer, and the entire casting looks more molded.
     
  8. sidsgarage
    Joined: Aug 28, 2009
    Posts: 32

    sidsgarage
    Member

    squirrel, F-ONE and chryslerfan55 like this.
  9. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,678

    F-ONE
    Member
    from Alabama

  10. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,678

    F-ONE
    Member
    from Alabama

    It’s a decent axle. Notice I did not say good.:(

    I have one in my ‘51 Coupe. It leaks out the pinion. I have tried a pinion seal I’m going to try another. It’s possible I may have put it in backwards. It’s also possible it eats pinion seals.
    They don’t make nothing good anymore, 75 years and it leaks.o_O

    It does not roar. It does not vibrate. It does not clink or clank. There’s no sign of anything being untoward other than the leak at the pinion.

    If it eats pinion seals, I have wear or looseness which means an over haul and to me, that’s easier said than done.

    It looks like the parts are available but unfortunately I can’t figure out the correct****embly processes.:confused:
    The Ford Shop Manual has the procedures but this is based on using Ford factory gauge tools for the settings.
    Without the 75 year old gauge tools I’m left with…..
    How long is a piece of string?
    I guess I’ll just have to figure it out.

    A common recommendation is to replace it with a Maverick 8”.
    When is the last time you have seen a V8 Maverick? I’ll be sure to get the Duesenburg hood ornament and ash tray when I’m*******ing that Maverick axle.:rolleyes:

    In the meantime, I keep adding dope.
     
    leon bee likes this.
  11. squirrel
    Joined: Sep 23, 2004
    Posts: 59,843

    squirrel
    Member

    I expect the setup of the ring and pinion is just like most other rear ends, ignore the Ford gauges, set up the gears with the old pinion shim and adjust the backlash, and then check the pattern. Change pinion shim as needed to get it close. Make sure to get some preload in the pinion and carrier bearings.
     
    F-ONE, Tickety Boo and saltflats like this.
  12. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,678

    F-ONE
    Member
    from Alabama

    Thanks Squirrel!
    I’m going to start a technical thread on this unit instead of hijacking this one.
    I would really appreciate your input.
    Thanks
     
  13. AldeanFan
    Joined: Dec 12, 2014
    Posts: 1,166

    AldeanFan

    FYI, I replaced the stock ‘54 rearend in my wagon with one from a ford ranger. My wagon had the “Heavy Duty Wagon rearend but the dimensions would be the same width as any other ‘54 ford car I****ume.

    The ranger axle was less than an inch difference in width, same wheel bolt pattern, available in many gear ratios from 2.73 to 4.10, with or without posi and with disk or drum brakes.
    Parts are easily available for this rearend and I got one from the pick and pull for $200.
    Personally I would swap in a ranger rearend before putting any money or effort in to a ‘54 ford axle
     
  14. 51504bat
    Joined: May 22, 2010
    Posts: 5,601

    51504bat
    ALLIANCE MEMBER

    Have an 8 inch from a Maverick in my '54 Ranch Wagon. 54 1/2" WMS to WMS. 5 on 4 1/2 bolt pattern. Only had to change the spring mounting pads. Factory ratios were limited but after market gears are easily available. I had a set of 3.50's installed in mine in place of the stock 2.80's.
     
  15. The parts for the Ford 49-56 rear are slim and none. Bearings can be sourced locally, Kanter carries a crush sleeve, but that is about it. I used a Maverick rear in my 53. Other than moving the spring pads in 3/4" on each side, it is a bolt in. I agree Maverick rears are getting harder to find, but they are out there. Currently have a couple of them in my stash.
     

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