Help with my 72 Rear end

Discussion in 'Got gears?' started by BigTodd, Jan 11, 2019 at 2:56 PM.

  1. BigTodd

    BigTodd Well-Known Member

    Just checked the rear end on by 72 trying to determine what it is. I believe it's a 10 bolt 8.5 unit. Can anyone confirm using the attached picture. Thanks in advance. I'm thinking of doing a posi upgrade...

    2019-01-11 14.10.06.jpg
  2. BigTodd

    BigTodd Well-Known Member

    Here's the front of the dif

    2019-01-11 15.01.34.jpg
  3. Bens99gtp

    Bens99gtp Well-Known Member

    sure looks like an 8.5
  4. BrianTrick

    BrianTrick Brian Trick

  5. BigTodd

    BigTodd Well-Known Member

    Any suggestions for a reasonably priced posi unit?
  6. Bens99gtp

    Bens99gtp Well-Known Member

    I'm pretty sure that any 8.5 posi with 28 spline will work and fit.......since yours should have bolt in axles you dont gave to worry about if the sides has the c clip spot in them or not.......I believe they even make a drop in locker that will turn your non posi carrier into a posi/locker
  7. monzaz

    monzaz Jim

    I had Holiday posi, gear and rebuild kit special in the parts for sale section.... Going to shut this down next week...

    Yukon Dura grip posi 8.5 CORPERATE (1971 - 2018 GM REARS) NEW in the box 369.00 (includes 28 or 30 spline units)

    1971 - 1988 GM REARS

    YUKON PREMIUM Gears 3.23 3.42 3.73 or 4.10 173.00
    Master rebuild kit for the Yukon posi 87.00
    2 carrier bearings and races
    1 inner pinion bearing and race
    1 outer pinion bearing and race
    1 Pinion seal
    1 pinion crush sleeve
    1 pinion nut
    1 rear inspection cover gasket
    1 carrier pack of carrier shims
    1 pinion pack of shims
    1 marking compound and applicator brush
    10 ring gear bolts
    1 RED loctite vial
    1 booklet to help you with your set-up pattern and torque specs.

    Shipping will be determined by zip code. 40-50 POUND BOX
  8. Bens99gtp

    Bens99gtp Well-Known Member

    nice prices there

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