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Thread: 8.5 posi noise

  1. #1
    Senior Member EXPERT BUILDER
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    8.5 posi noise

    gm 8.5 posi make clunking tapping chattering noise when turning?
    what could it be?????
    it a stock posi carrier 4.88 gears

  2. #2
    Senior Member EXPERT BUILDER gearhead1011's Avatar
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    It might just be the clutches chattering and a little friction modifier should fix that. It's possible there is damage to the spiders so it wouldn't be a bad idea to pull the cover and have a look. If you don't find anything broken then some fresh synthetic lube and a bottle of additive should make a difference.

  3. #3
    Senior Member EXPERT BUILDER
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    ok thanks

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