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6 lug to 8 lug swap question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by reddog64, Aug 27, 2001.

  1. reddog64

    reddog64 1/2 ton status

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    I'm dropping in a 14 bolt and need to convert my 6 lug d44 to 8 lug... I read steve's article and know I need 3/4 ton stuff to do the swap with or do i need a 3/4 ton d44 to begin with... If my D44 is 6 lug it's half ton... I have a 10 bolt on a suburban that had the 14 bolt... that should be 3/4 ton right... can I get the stuff i need to do the swap off that.. it's 8 lug... what about a junked 2 wheel drive 79 chev truck that I know is a 3/4 ton truck can I scavange the parts I need off that to swap over to 8 lug on my D44??? What can I get these needed parts off of.... Do i need to have a certain D44 to do this with???

    [image]http://www.inhomenetworking.com/images/littleblue.jpg[/image]See me at <a target="_blank" href=http://www.inhomenetworking.com/78jimmy.htm>http://www.inhomenetworking.com/78jimmy.htm</a>
     
  2. Esteban86K5

    Esteban86K5 1/2 ton status

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    Here's what I know( or think I know ), the only difference between a 1/2 ton D44 and a 3/4 ton D44 is the Backing plates, hubs, spindles and rotors. Everything else is the same. As far as the 10 bolt and 44 being interchangable, I believe they are as long as you get EVERYTHING from the backing plates out. The 2 wheel drive doen't have the same hub, rotor, spindle assembly as a 4WD so NO you can't use it for parts.

    <font color=blue>Esteban</font color=blue>

    <font color=red></font color=red>
    <a target="_blank" href=http://coloradok5.com/gallery/Estebans-album>Take A Gander At My Truck Here.</a>
     
  3. ScoobyDann

    ScoobyDann 1/2 ton status

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    here is what you do
    everything is the same on the 44 and 10 to do the swap. what ever axle you have now take everything offf to the backing plates. do the same to the 8 lugger. Put the 8 lugger backing plate on w/ which ever spindle was better, (6 and 8 lug spindles are the same) put the 8 lug rotor and hub. (dont forget to check and pack bearings and new seal) berings and seals are same for 6 and 8 lug. put the hub on (hubs are the same for 6&amp;8 lug) hope this helps.

    danny

    Hut in the well is goin on in here?

    sun desert offroad <a target="_blank" href=http://4x4.alloffroad.com>4x4.alloffroad.com</a>
     
  4. ScoobyDann

    ScoobyDann 1/2 ton status

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    if im not mistaken, some 44 spindles are different, i think the older ones, there is a certain years that the 10 and 44 are the same but not sure

    Hut in the well is goin on in here?

    sun desert offroad <a target="_blank" href=http://4x4.alloffroad.com>4x4.alloffroad.com</a>
     
  5. Esteban86K5

    Esteban86K5 1/2 ton status

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    O.K. everyone knows that if your gonna ask someone about axles your gonna ask ThatK30guy. He knows it all. So this is what he wrote on my post when I asked this same question a few months back.


    "GM has two different types of axles: the "first design" and the "second design". For those who dont know the difference, the "first" goes from 73-76. The "second" goes from 77 to 91. Some differences are:

    1. Backing plates are ALL diffferent. Both 1/2 and 3/4 ton for both designs are NOT the same thing. 3/4 tons are larger diameter than the 1/2 tons. There are currently 6 different types of backing plates. The 1/2 ton has the 73-76, 77-80, and 81-91. 3/4 ton is the same years, but only bigger around.

    2. Bearing hub and rotors are different. There are 4 types. 73-76 use a smaller wheel bearing on both the 1/2 and 3/4 ton. The 1/2 ton bearing hub is an internal drive. 3/4 tons were available in both the internal and external drives. 77 and newer bearing hubs are the same size wheel bearing. 1/2 and 3/4 tons are all internal drives. The differences in the rotor diameter is the fact that the 3/4 tons are larger around than the 1/2 tons. This is why the backing plates are larger around than the 1/2 tons. If you use a 1/2 ton backing plate on a 3/4 ton rotor, the caliper will NOT even align up with the bolts. If the 1/2 ton rotor is used with the 3/4 ton backing plates, the caliper will NOT have enough pad contact with the rotor.

    3. Spindles. 73-76 are one type only. They are "first design" small bearings. 1/2 and 3/4 ton spindles are interchangable. 77-91 spindles are "second design" and all interchangable between 1/2 and 3/4 tons. You cannot use a first design spindle with a second design bearing hub &amp; rotor. The hub will wobble in place. If the second design spindle is used with a first design bearing hub, the hub will not even go on at all.

    4. D44 and 10B axle shafts are not interchangable. The D44 shafts measure: right - 36.13"
    left - 18.31"
    10B shafts measure: right - 35.46"
    left - 19.15"

    5. Steering knuckles. D44's have the infamous "flat top" knuckles on the passenger side. These are good for the crossover steering for where the steering arm is mounted on top of the knuckle after machine work and drilling has been done. The 10B knuckles have NO flat surface whatsoever. Machine work would be excessive to make the crossover work and therefore would be easier and cheaper to locate the correct knuckle off a D44.

    All in all, when doing a swap like this, try to round up the parts off one truck to use on the other. Such parts to swap over would be: backing plates, spindles, bearing hub &amp; rotors, and if desired for crossover steering, the knuckles.

    The knuckles do NOT need to be changed if you do not plan on the crossover steering.

    It all boils down to this: D44 and 10B parts ARE interchangable from the knuckles out. Anything else from the knuckles in is NOT interchangable.


    ALL calipers on both D44 and 10B are compatible with either axle. Even the first and second design axles are compatible with BOTH 1/2 and 3/4 ton calipers. So, whatever swap you plan on doing, you can retain your stock calipers.
    When stepping up to the big D60, this is a whole different ball game. Nothing is interchangable from the D44 and 10B to the D60.



    Thank you Wes.


    <font color=blue>Esteban</font color=blue>

    <font color=red></font color=red>
    <a target="_blank" href=http://coloradok5.com/gallery/Estebans-album>Take A Gander At My Truck Here.</a>
     
  6. ScoobyDann

    ScoobyDann 1/2 ton status

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    well I'll be damned

    Hut in the well is goin on in here?

    sun desert offroad <a target="_blank" href=http://4x4.alloffroad.com>4x4.alloffroad.com</a>
     

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