Vibration under acceleration and at 70mph+

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Old Jun 20, 2009 | 12:07 PM
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Default Vibration under acceleration and at 70mph+

Bought the car with a mystery vibration, previous owner suspected either tire/wheel problem or ujoint/shaft problem. I personally balanced the tires and checked wheels for bends, and just reinstalled the driveshaft with new ujoints and rebalanced. Still vibrates from about 70 on up. Also upon mild to hard acceleration from a dig I could hear/feel some "clunking" from what felt like the rear end. Any thoughts or ideas would be appreciated, thanks.
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Old Jun 21, 2009 | 12:28 PM
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Something IS bent or broken. Could be a lot of things though: frame, suspension, bolt, bushing...

Put the rear end up and check for asymmetry.
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Old Jun 21, 2009 | 03:04 PM
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My money is on the rear end. 120k miles, might need to be freshened up.
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Old Jun 21, 2009 | 05:11 PM
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REAR end! Get some gears a good set of axles and some royal purple oh and a rear end girdle!!!! Be good to gooooo
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Old Jun 21, 2009 | 05:27 PM
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https://ls1tech.com/forums/lt1-lt4-m...over-90-a.html
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Old Jun 21, 2009 | 09:34 PM
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dont do over 70
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Old Jun 23, 2009 | 09:59 PM
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Originally Posted by mred
dont do over 70
Genius!!!
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