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Old 05-05-2017, 12:49 PM
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mac88chp mac88chp is offline
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Join Date: Jan 2007
Location: NorCal
Posts: 1,395
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You may be having issues with axle bearings and/or clutch packs in the posi unit. Do you know when the last time the rear axle was serviced? If not, I would think about getting your car to a shop that specializes in rear end and driveline service and repairs. Here's one that I know of nearby that you can check out for yourself:

http://www.rearendspecialties.com/index.htm
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1988 CHP #3035

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