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Axle swap options. Urgent!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by FastMaxx, Sep 24, 2005.

  1. FastMaxx

    FastMaxx Registered Member

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    Ok, I have a 86 k5 (daily driver) w/ 10B front and rear. I turned my spyders (rear) into dice the other day :doah: . I can't for the life of me find a 3.42 geared rear end (junkyards). The reason I need the whole rear end is b/c the center pin was welded in, ring & pinion chewed up by spyders, and I dont know how to "set up" a rear end. I think I found a 10B (or 12B) w/ 3.73 gears, 5 lug. I can get it for free... Will my 6 lug axles swap in (10B or 12B)? Can I run it if I keep it in 2WD? This would be a temporary fix. After I get my lift and tires (35s) Im going to get 4.56 gears for f/r. I've done many searches and nothing answered my question completely. P.S. Driving your grandma's mini van back and forth to school and work is no fun. My friends > :haha: Thanks for any and all help.
     
  2. divorced

    divorced 3/4 ton status

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    I know that on older 12 bolts the 5 lug and 6 lug axles will interchange. I don't know about 10 bolt axles and 12 bolt axles swapping though, but it is something I've been wondering? :ears:

    You will be fine in 2 wheel drive.





    ;)
     
  3. shane74

    shane74 1/2 ton status

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    If it's a 12B, you can interchange 6 lug 12B shafts/drums. IIRC, you cannot interchange 10B/12B axle shafts. The brake hardware should work the same on both axles, but the axles shafts themselves are a different spline count. I have a spare set of 12B 6 lug shafts if you decide to go that route. Heck I have a complete 3.73 12B w/ rear discs that I would let go for a pretty low price.

     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Personal experience , 10 bolt shafts won't work in a 12 bolt . Center pin ( crosshaft , or pinion pin ) is bigger in the 10 bolt , so the axles are shorter on the 10 bolt .
     
  5. 88sub4x4

    88sub4x4 1/2 ton status

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    If the center pin is welded in and can't be removed, you probobly won't be able to get the axle shafts out anyway.
     
  6. FastMaxx

    FastMaxx Registered Member

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    Yeah a big hammer (ford wrench) solved that :D just phuked up the carrier. I guess I learned my lesson about doing burn-outs with slick a$$ 31s on the asphalt.
     
  7. hunterguy86

    hunterguy86 1/2 ton status

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    Time for a 14 bolt maybe?
     
  8. 4xcrazy

    4xcrazy 3/4 ton status

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    thats what it sounds like to me, this about the time i started the "transformation" from the 1/2 ton to 3/4 ton setup, get ya a 14bff and a couple of cheapo steal wheels from the junk yard to just get ya by for the time being, and put alittle into each alittle at a time,,,,heck i drove around for almost 2 years with a 14bff 8 lug rear, and a 10b 6 lug front, similar sized (measurement wise) tires, and still wheeled it.

    was ugly, but it worked
     

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