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Are dually rears Dana 60's or 70's?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by mpascino, Aug 5, 2001.

  1. mpascino

    mpascino 1/2 ton status

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    Are dually rears Dana 60\'s or 70\'s?

    Just trying to figure out if it is worth swaping out my 14bolt FF? Anyone played with these?


    You call that dirty!?
     
  2. ken

    ken 1/2 ton status

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    Re: Are dually rears Dana 60\'s or 70\'s?

    GM Dana dually rears are 70s. 10.5" ring gear in both the 14 bolt and the 70. Both have 1.2" shafts. except the 70 has 35 spline and the 14 bolt has 30. I wouldn't bother swapping out your 14 bolt.

    ken
     
  3. mpascino

    mpascino 1/2 ton status

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    Re: Are dually rears Dana 60\'s or 70\'s?

    prob should just regear the 14 bolt then I guess! Thanx ken

    You call that dirty!?
     
  4. pcorssmit

    pcorssmit 1/2 ton status

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    Re: Are dually rears Dana 60\'s or 70\'s?

    The shafts are 1 1/2", not 1.2 (assuming a typo on the 10 key).

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  5. ken

    ken 1/2 ton status

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    Re: Are dually rears Dana 60\'s or 70\'s?

    Yup. My bad, typo error. Thanks.

    ken
     

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