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Re: 55+ vibration - Help
I had a lot of NVH in my Burban when I first got it running. A rebuilt drive shaft with an aftermarket carrier bearing took care of about half of it. The rest was coming from the rear end.
In the end we found the posi carrier case and the spider gears were disintegrating. (Photo below) In addition one axle had had a bearing fail at some point and it had a speedi-sleeve installed over the bad spot on the axle.
Fortunately I got it fixed before the ring and pinion or the housing were damaged.
As previously mentioned it would be worthwhile to pull the cover off for an inspection. Personally I would pull the axles and inspect the bearings at that point for peace of mind.
Good luck and please keep us in the loop.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. 
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377
Last edited by HO455; 03-04-2022 at 10:42 AM.
Reason: Found the photo to add.
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