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14 Bolt FF Slop

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by okie k5, Jun 13, 2004.

  1. okie k5

    okie k5 Registered Member

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    I 've got a 14 Bolt FF and the pinion yoke has some hellacious rotational slop. I would estimate that the yoke rotates roughly 45 or 50 degrees before actually engaging the ring gear. Is this normal? I don't think it is and I was planning on having a shop check it out. What are some likely causes and what kind of prices are we talking about. I realize labor rates vary, I just don't want to get rouchambeaued.
     
  2. Hossbaby50

    Hossbaby50 3/4 ton status

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    Definilty not normal and needs checked out
     
  3. HarryH3

    HarryH3 1 ton status Author

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    If it has a Detroit Locker and 4.56 gears, then that would be normal. /forums/images/graemlins/yikes.gif

    To read why, click on the link in my sig, then select "Tech Articles", then the link for locking differentials. /forums/images/graemlins/cool.gif
     
  4. az-k5

    az-k5 1/2 ton status

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    With a detroit the 14FF can allow a lot of slop. My rig rolls about 2 feet sometimes due to this slop (rolls when parked on incline). I have asked a few owners of this set up and they all said it was normal.
     
  5. fwdjunky

    fwdjunky 1/2 ton status

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    Great article! Makes me rethink my thoery that my spud shaft is worn, maybe all that slop is due to a detroit and 4.10's. Nah, I couldn't get that lucky.
     
  6. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    [ QUOTE ]
    my spud shaft is worn

    [/ QUOTE ]

    /forums/images/graemlins/histerical.gif /forums/images/graemlins/histerical.gif /forums/images/graemlins/histerical.gif
     
  7. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

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    NO, for soem reason theres always more movement at the yoke then the ring gear. If you dont have a locker then thats not right. You could always pull the cover and check it out though.
     
  8. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    I had the same problem with my 14ff when I picked it up from the wrecking yard. Lots of slop and I just had a govlok and 4.10's. When I first got it going the R7p were howling like crazy so I took it to a gear shop and they popped in new pinion bearings which were coming apart letting the pinion slide in too far.
     
  9. okie k5

    okie k5 Registered Member

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    A gear shop told me it is normal for the 14 Bolt. The killer is that it wore out a Dana/Spicer ujoint in 12,000 miles. That is awful quick as far as I am concerned. If I have to replace ujoints every 12,000 miles I can live with that, but if it is not normal I don't want to. Thanks for the posts and the answers.
     

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