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Rear diff probs

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Thumper, May 31, 2000.

  1. Thumper

    Thumper 1/2 ton status

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    Location:
    Alberta Canada
    So here we go again... I just got the tranny fixed and was driving home today when I heard the wierdest noise. I looked under the truck and the rear diff cover had a gouge in it and was leaking fluid. When I pulled the cover, I foun d that one of the ring gear bolts had come loose and fell into the bottom of the housing, got picked up, squeezed between the cover and ring gear, and broke off half of one tooth on the ring gear. My question is: how long can I expect to baby this diff, if at all? They are Richmond 4:56 ratios, and would sure like it to last the rest of the week. I dont have any hiway driving to do, just slow town speeds, but I sure dont want a "catastrophic" failure of the rear end (if you know what I mean). [​IMG]
    There is no other visible damage on any other parts in the housing, so.....

    Hopefully....
    Hey maybe this is my chance to go 14 bolt eh?

    Mike


    <font color=blue>Thumper
    85 Fullsize Jimmy
    [​IMG]
    <font color=red>Lets Go Wheelin! </font color=red>
     
  2. chevy4x4

    chevy4x4 1/2 ton status

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    do you still have the stock diffs?
    if you have 4:56 i am guessing you have around 35s.
    i'd swap in a 14 blot

    chevy4x4
     
  3. blazer72

    blazer72 1/2 ton status

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    It could last a few more miles it could last 300 miles it could die backing out of the driveway.
     
  4. MICHIGAN BLAZER

    MICHIGAN BLAZER 1/2 ton status

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    When mine went I noticed that the growling was only when i'd take my foot off the gas....giving it gas was okay. I don't know if yours is the same way...but if it is maybe throw it in neutral when coming to a stop.

    <font color=red>MICHIGAN BLAZER
    <font color=green>89 Fullsize Blazer
    87 Cherokee
    65 IH Scout
     
  5. Burt4x4

    Burt4x4 3/4 ton status

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    Location:
    California (Modesto area)
    As long as you removed the 'chunks' [​IMG] you should be fine for mild speed and paved roads.
    Just don't put your foot into it and get it fixed ASAP!!
    Good luck Dude

    Rock ON![​IMG] 72 K5 [​IMG] Led Zeppelin
     
  6. ken

    ken 1/2 ton status

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    WHAT?!?!? Not yet ANOTHER 10 bolt biting the dust, huh??? Keep on upgrading, full floating, etc to this weak diff, and you too will soon have the pleasure of posting what Thumper is experiencing. Sorry to hear it Thumper...and YES now is the perfect time to UPGRADE to a 14 bolt.

    ken
     

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