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sub rearend swap to 85 k5

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by aduff85k5, Jan 13, 2005.

  1. aduff85k5

    aduff85k5 Registered Member

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    i have a rear end out of an 81 sub and have found the rear to be somewhat shorter than the original 12 bolt that i took out. i have not measured it but it looks noticiable from behind. i havent put any tires on yet and am contemplating different fixes. "extra wide rims and tire"/"the axle extensions that have been shown in the mods page" has any one other than the author of that article (axle extensions) done anything different/any insight?
     
  2. divorced

    divorced 3/4 ton status

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    Do you mean it isn't as wide? And if so, are you sure it's narrower? What kind of rear did you pull from the burb and what did you put it in?
     
  3. aduff85k5

    aduff85k5 Registered Member

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    i'm not completely sure however it appears to be. i've read somwhere in these discussions that the suburban rears are shorter, i think. and i put it into an 85 k5
     
  4. divorced

    divorced 3/4 ton status

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    There is a small difference in width between 1/2 ton and 3/4 ton, but the K5's, burbs, and trucks all got the same rears. I think dually rears are different though.
     
  5. aduff85k5

    aduff85k5 Registered Member

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    thanks i'll know when the tires are on though
     
  6. MA87K5

    MA87K5 1/2 ton status

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    10 bolt and 12 bolts 4x4 are the same width. At least from 73-91 body style.
     
  7. darkshadow

    darkshadow 1 ton status

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    it will look narrower than the front as all are.
    but the rears will be the same.
     
  8. aduff85k5

    aduff85k5 Registered Member

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    so the addition of wheel spacers will no be really nessisary unless i don't like the look,,,,,right?
     
  9. darkshadow

    darkshadow 1 ton status

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    i guess the idea of it was to get the rear tires in a slightly different track for traction.

    i lot of guys really dont like the look, but i can only really tell if i am 30 feet away and low to the ground.

    your backspaceing wont be a problem, but they do make you a little weeker.
    so big tires and hard wheeling are not a good combo for spacer IMHO.

    most recomend re torqueing them after a few 100 miles and again after a 1000. just to make sure.
     

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