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Gonna look for 12 bolt rear

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Ancient_4X4, Aug 24, 2001.

  1. Ancient_4X4

    Ancient_4X4 Registered Member

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    I had my truck in today to get the rear bearings replaced and it turns out that the real problem is that my rear gears are splined a little. I get some vibrating when driving on the highway and sometimes just in town, but my mechanic said that they aren't that bad. I'm not sure I want to pay the labor to get those gears replaced, I was thinking more along the lines of finding a 12 bolt and just doing an axle swap which should be cheaper. How much should I expect to pay for a 12 bolt with 3.08's for a 77 chevy?
     
  2. riz

    riz 3/4 ton status

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    <font color=purple> I too would be interested in one but with 4:56 gears in it .

    L8r,
    . Riz . <a target="_blank" href=http://www.geocities.com/rizmonkey>www.geocities.com/rizmonkey</a>

    <font color=purple> BOW CHICKA BOW WOW !
     
  3. Pugsley

    Pugsley 1/2 ton status

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    Me three!! But I want 4.10's in it

    Dos mas Tecates!!!
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  4. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    my friend's '79 12-bolt is $130 just for gears, but he's goin to 4.56s

    scott,
    1989 suburban 3/4t 4" lift soon to be rollin on 33s, tbi350
     
  5. arq

    arq 1/2 ton status

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    ancient,
    i may put up mine for sale, it's from a 72 though. i put in gears(3.08), axels and sliped in a lockright about a year ago. i have reciepts and everything. i am going to GM14bolt some time in the near future.

    ARQ.

    1-72 4x4 CST Blazer
    2-71 4x4 CST Blazer
     
  6. Ancient_4X4

    Ancient_4X4 Registered Member

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    What I meant to say is how much should I expect to pay for a decent one in at a junkyard?
     
  7. CaptCrunch

    CaptCrunch 1/2 ton status

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    I got my 12B w/ 4.10's for $250. I'm going to change to 4.56's though! I wouldn't pay more the a couple hundred for a 3.08 axle... there are far too many out there and they are a crappy ratio. Mayb you should step up to a 3.42 or 3.73... definetly would be worth the extra money for the frt axle to match. You are probably better of find some in the paper or a local 4x4 place/military eqip. Sometimes salvage yards want a little too much for theirs.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  8. mudhog

    mudhog THEGAME Staff Member Super Moderator

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  9. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>You guys would pay for one of those?! I had one from my truck sitting in a lot for sale for 3 months until it got stolen!!! If anyone near NYC needs a 3.42 12 bolt let me know I have one that I'll sell cheap.</font color=blue>
     
  10. White Knight

    White Knight 1/2 ton status

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    Got a 12 bolt out of a 1977 Gmc P/U I think its 3:73 geared, yours for 150.00 if you can figure out how to get it....I'm in Ft Worth Texas.

    White Knight
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I wouldn't give more than $50 for one.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  12. Pugsley

    Pugsley 1/2 ton status

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    Makes me wonder what all the SCORE drivers running 10 and 12 bolts are thinking[​IMG]

    If the shoe fits, get another one just like it
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     

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