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10 bolt/dana 44 Differences

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by burbBoy, Apr 11, 2002.

  1. burbBoy

    burbBoy 1/2 ton status

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    I was looking around online and counting the splines on the extra shafts in the garage last night. I always thought 44 and 10 bolt shafts were interchangeable but i found 10 bolts that were 28 spline and 44's are 30 spline. Is this how all 44's and 10 bolts are or just the ones i have found??

    Brian
    82 burb 38.5's, 10/14 bolts, sm465/np205
     
  2. 6.2Blazer

    6.2Blazer 1/2 ton status

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    The Dana 44 fronts in GM have always had 30-spline shafts. Some earlier versions had smaller u-joints also.

    10-bolts used the 28-spline shafts up to around '88 or '89 when they switched over to 30-spline versions for the last couple years of solid front axles in the Blazers and Suburbans. The 28 and 30 spline 10-bolt shafts are the same length, which is slightly different than the 44 so even the 30-spline versions are not interchangeable. However, the stub shafts are the same between the 44 and 10-bolt.
     

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