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Thread: Rear Axle Hop

  1. #1
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    Default Rear Axle Hop

    Hey everyone, I have an '89 4.0L 5spd. Completely stock drivetrain, but lifted 4.5" on 31s. My rear axle "hops" every time I start from first gear. It happened a little bit before the lift but the lift definitely made it worse. Again, this is only when starting from a stop, sometimes I can get it to go smoothly but it usually hops and shudders around. What is causing this? Is my rear driveshaft angle the problem? Do I need a rear CV deiveshaft?

  2. #2
    Join Date
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    Default Re: Rear Axle Hop

    Have you checked your U bolts to see if things are tight. Might be the housing rotating because they are not tight enough
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
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    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
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    And a bunch of other stuff

  3. #3
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    Default Re: Rear Axle Hop

    Spring wrap?? What kind lift do you have?

  4. #4
    Join Date
    Oct 2011
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    Default Re: Rear Axle Hop

    I would also check out the transmission mount. It can get old and soft and start shaking when taking off from a stop.

    Here's mine to give an example.
    Jeep Cherokee drivetrain shifting during take off: http://youtu.be/3c0HqiB-p28

    Sent via messenger pigeon - i talk, he types.

  5. #5
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    Default Re: Rear Axle Hop

    Awesome I'll check out those culprits! Never heard of spring wrap—I have an add-a-leaf and shackles lift

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