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12 bolt posi

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by lukerz, Jun 15, 2001.

  1. lukerz

    lukerz 1/2 ton status

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    Hi all,
    Quick question about changing from 5 lug to six lug on a 12 bolt rear. I have a non posi 6 lug and want to convert to posi. Can I just swap axles from my non posi into the posi rear end?

    83 K10 from 76 K5 & 83 C10
    Th350 Np203 355 CID
    31 X 10.5
    Plan on 2" body lift
     
  2. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    as long as the spline count is the same why not just take the posi and put it in your 12bolt? thats what i did to mine

    77blazer see it at<A target="_blank" HREF=http://community.webshots.com/user/ssmith6333>http://community.webshots.com/user/ssmith6333</A>
     
  3. Triaged

    Triaged 1/2 ton status

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    The axles just swap out. I have a friend that just did the opposit (6lug to 5lug). As long as it is a truck 12bolt you will be fine.

    '71 Blazer CST with alot of rust
     
  4. lukerz

    lukerz 1/2 ton status

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    Did you have to worry about changing out crush sleeves and all the alignment stuff for the differential?
    Luke

    83 K10 from 76 K5 & 83 C10
    Th350 Np203 355 CID
    31 X 10.5
    Plan on 2" body lift
     
  5. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    i took it in to a local shop and had it done it cost me like $200 but that also included the posi unit being rebuilt[​IMG]

    77blazer see it at<A target="_blank" HREF=http://community.webshots.com/user/ssmith6333>http://community.webshots.com/user/ssmith6333</A>
     
  6. lukerz

    lukerz 1/2 ton status

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    I might want to do this myself. I am ground up when it comes to this. Anyone ever done a rebuild on a 12 bolt posi?
    Lukers

    83 K10 from 76 K5 & 83 C10
    Th350 Np203 355 CID
    31 X 10.5
    Plan on 2" body lift
     

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