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Can I use Dana 44 side gears in a GM 10b?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ankarback, Oct 1, 2006.

  1. ankarback

    ankarback 1/2 ton status

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    I broke the right driveshaft in my front axle yesterday. I have several spare D44 driveshafts laying around but none for the GM 10b. Can I replace the side gears in the 10 bolt with the D44 sidegears so I can use the 30 splines driveshafts from the D44? That would be nice if it can be done. I beleive that the D44 shafts are a bit stronger since I never broke any in my old blazer.

    Btw, how common is it with a GM10b in a -77. I always thought I had a D44 in the suburban too until the driveshaft broke and the spareshaft didn't fit:doah: Never thought about it, and I've had it opened several times and changed the oil in it:o
     
  2. neverendingproject

    neverendingproject 1/2 ton status

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    Id like to know about the side gears, but I think ~76 is when the started swapping to the 10B.
     
  3. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    The axles are not the same length in the front tubes in the first place . Just off enough for it not work even if you had the right spline side gears , which by the way won't fit . GM is GM ( now AAM ) , and Dana is Dana ( actually Spicer , Dana is the holding company name ) .

    You would have to get a 30 spline 10 bolt to use 30 spline shafts , but it has to be GM length shafts .
     
  4. ankarback

    ankarback 1/2 ton status

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    I suspected it wouldn't work. I didn't know they were of different length. I know they are different axles but I thought it was worth a shot asking.
    Thanks for the info.
     
  5. Jimbo*

    Jimbo* 1/2 ton status

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    To add to your statement, the 30 spline Dana 44 axle spline has a different pressure angle than the 30 spline GM 10 bolt; so even if the axle was the correct length, the splines don't match up.
    Jimbo
     
  6. 1BEATK5

    1BEATK5 1/2 ton status Premium Member

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    the necked down area right before the splines is the same diameter on either axle, 1.1"? so the 44 shafts aren't any stronger anyway. Maybe someone would trade you. I would trade you if you lived closer.
     

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