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how to buy an axle

Discussion in 'The Garage' started by showmeburb86, Oct 12, 2006.

  1. showmeburb86

    showmeburb86 Registered Member

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    In looking to buy a 14bff to replace the corp. 10b on my 86 sub, what all do I need? Do I need drums and all? If I go to a junk yard and find one on a burb, what all should I take home with me? Just unbolt the springs, schocks, etc and drag it all home?

    Dumb question I'm sure: Do the front and rear gear ratios need to be the same?
     
  2. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    get the u-bolt plates. they are bigger then the 10 bolt ones you have now. get the front axle to so the rations match or you can at least swap the 8 lug hubs.
     
  3. broc944

    broc944 1/2 ton status

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    As far as I am aware of, you will not find a 14bff on a Burb.
     
  4. divorced

    divorced 3/4 ton status

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    Why not?
     
  5. beater_k20

    beater_k20 Banned

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    not on a 1/2 ton burb you wont, but you're gauranteed to find one under a 3/4 ton burb.
     
  6. Avery4jc

    Avery4jc 1 ton status Premium Member GMOTM Winner

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    well thats bad news, lol
    I'm buying a 14ff out of a burb from JP0863 in the next couple of days.
    ;)

    -Avery
     
  7. broc944

    broc944 1/2 ton status

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    I stand corrected. I thought only 14BSF are to be found under stock Burbs.
     
  8. dremu

    dremu Officious Thread Derailer Premium Member

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    New ones, yes. Older ones -- obviously 3/4's -- came with the FF.

    -- A
     
  9. broc944

    broc944 1/2 ton status

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    What is the cutoff year between FF and the switch to SF?
     
  10. dremu

    dremu Officious Thread Derailer Premium Member

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    Sheeeeit, I *knew* you were gonna ask. I was gonna put in there "sometime" to be more precise =))

    It's like early 80's, I think. I know my '90 Burb had the SF, and the late 70's ones had the FF.

    Might also depend on GVWR, and phase of the moon.

    -- A
     
  11. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    it is ABSOLUTELY important to have the gears the same. only thing is that, for instance, a front gear ratio of 4.11 and a rear of 4.10 is ok. apparently being off by a hundredth isn't a big deal. they were available stock like this (its what i'm currently running). don't know if, for example, the 3.73's are 3.74's up front or any other combination of gear ratio.
     
  12. bowtiepower00

    bowtiepower00 1/2 ton status

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    Burbs with the BBC or Diesel will probably have the FF. You don't have to have a Burb axle, one from a 3/4 ton truck will work. A 1-ton FF will have the spring mounts in a different location. You are going to want one from a non IFS truck too (pre-87 in trucks, 91 in burbs and Crew cabs). 88-91 or so has a reinforced ribbed pinion support, but this is not really a big deal. I would look for one off of a 4x4, as the 2WD axles may be a bit narrower. You may want to measure just to be sure. The easiest way might be to scan the classifieds here at CK5 until you find one close to you, or post a wanted ad. Should be able to get one for anywhere from $100-$500 bucks, depending on condition, etc. I would look for one with an open carrier so that you can put a detroit locker in it. Also, depending on the condition of the drum brakes you may want to consider a disk brake swap, particularly if your rig is an automatic.
     

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