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Re: Drive shaft support bearing breaking.
Your pinon angle is definitely incorrect. The angle of the center u-joint and the aft u-joint need to be the same. Here is a link to a lot of information on the subject. Be sure to follow the links included. The thread is in the 4x4 section but all of the theory is the same just in a different direction. Lowered trucks have the same drive line issues as lifted trucks. With less room. 
http://67-72chevytrucks.com/vboard/s...u+joint+angles
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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,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 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
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