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What rear end in an '02 Duramax?

Discussion in 'The Garage' started by pismorat, Sep 23, 2005.

  1. pismorat

    pismorat 1/2 ton status

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    I am looking to change the differential fluid in my dads truck, but need to know what rear end is in it to get a gasket. I don't want to go to the dealer, and my dad doesn't like using just rtv. Any thoughts - 14bff???
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    if the cover kind of looks like 14ff cover its the new 11.5 corp axle. if just exactly like 14ff then old std 14ff. most likly 11.5 new axle.
     
  3. daleearnhardt01

    daleearnhardt01 1/2 ton status

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    11.5" Full Floater 14 Bolt....
     
  4. steve_kibbe

    steve_kibbe 1/2 ton status

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    I thought they were a AAM axle??

    You can buy a sheet of gasket paper and cut one out. Clean your dif cover, mark the out side edge and the holes, then cut out the outline. Next, cut a hole in the middle where the ring gear can come through. Place it over the lip of the dif housing where the gasket will go. Take a round piece of metal and score the inside edge against the inner lip of the housing. Cut the scored mark out, use a hole punch for the bolt holes, and whala, you have a gasket.

    Before you install it, make a template so you don't have to go through all this again. :D

    Or you can just buy one :o
     
  5. daleearnhardt01

    daleearnhardt01 1/2 ton status

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    It is made by AAM
     
  6. JIM88K5

    JIM88K5 1/2 ton status

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    Do it right

    11.50 ring gear. Go to the dealer get the part and be done with it. It takes synthetic gear lube too you know...
     

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