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What Diff is This?

Discussion in 'Tech Discussion' started by GregL, May 25, 2019.

  1. GregL

    GregL Full Access Member

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    1977 K20
    Thanks, Greg 20190525_134051.jpg 20190525_134107.jpg
     
  2. Blue Ox

    Blue Ox Turning Diesel Fuel Into Fun

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    GM 10.5" 14 bolt full floater.
     
  3. GregL

    GregL Full Access Member

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    Thanks Blue.
     
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  4. bucket

    bucket Super Moderator Staff Member

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    Original rear brake lines, you don't see that around here. You can even see where there used to be a label on the diff cover. I wonder what it used to say?
     
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  5. GregL

    GregL Full Access Member

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    Yes, gotta love SoCal environment for vintage vehicles.
    Politics... not so much, but the climate is badass!
     
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  6. 78C10BigTen

    78C10BigTen Full Access Member

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    Its crazy i saw it for a brief second and immediately said 14 bolt FF!
     
  7. shiftpro

    shiftpro Full Access Member

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    That is by far the best rear diff made by GM. Easy to set up gears in it too.
     
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  8. GregL

    GregL Full Access Member

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    I need to replace the passenger side axle. Seal surface is worn and leaking.
     
  9. bucket

    bucket Super Moderator Staff Member

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    It's a full floater, so the axle shaft doesn't ride on the seal. The seal is in the back of the hub and rides on the spindle.
     
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  10. GregL

    GregL Full Access Member

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    Can you tell me which diff my front one is as well? 20190525_134127.jpg

    20190525_134118.jpg
     
  11. bucket

    bucket Super Moderator Staff Member

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    That's a Dana 44
     
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  12. GregL

    GregL Full Access Member

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    Thanks bucket.
     
  13. GregL

    GregL Full Access Member

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    It keeps eating seals on that side. 3rd one in 18 months.
     
  14. Blue Ox

    Blue Ox Turning Diesel Fuel Into Fun

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    Are you talking about the hub seal? You may have a bearing or a spindle problem.

    * Which is pretty much what bucket said. Sorry for not reading thoroughly.
     
  15. bucket

    bucket Super Moderator Staff Member

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    There might be a nick or gouge on the seal surface that can be removed with a file. If it's too badly damaged, you can get a Speedy Sleeve for it I think.

    It would be no big deal at all if there is a 2-piece type HD seal available, like what the big trucks use. But I'm not aware of any.
     
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