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auburn LSD from 89 2x4 pickup

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Oct 13, 2000.

  1. ftn96

    ftn96 1/2 ton status

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    Unlce has a brand new Auburn LSD for an 89 GMC 2 wheeler pickup. You guys think it would fit my 90 gmc 4x4. They should have the same 10 bolt 8.5 rear. Please tell me they do. He only want 200 for it.

    Don't you buy no ugly truck!
     
  2. 6.2Blazer

    6.2Blazer 1/2 ton status

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    It should fit as long as both rear axles (the one in the '89 and the one in the '90) are 10-bolts, which they should both be if stock and the pickup was a 1/2 ton version. The only other problem you need to check on is the spline count on your axles. Earlier 10 bolts had 28 spline axles while sometime around '88 or '89 they started using 30 spline axles.
     
  3. ftn96

    ftn96 1/2 ton status

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    Soon as I posted this I thoght about that. But I do appreciate the reminder. This is just too good a deal. Wisha may wisha might, hope this spline is 30 tonight!! LOL
    Thanks 6.2

    Don't you buy no ugly truck!
     

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