pinion angle shims for lowered truck

[billogna]

I was wondering if anyone out there knows the correct angle/ dimensions of the shim that would give me the correct pinion angle for a truck lowered 4 to 5 inches in the rear. Mine is lowered 4.75". I can make a shim from aluminum stock.

I broke another carrier bearing this week. They generally last anywhere from 3000 to 6000 miles. I welded the top edge where the cage is spot welded to the threaded plate, and it lasted a lot longer than the last one.

I know my driveshaft is too short now (only pushes into tranny another 1/2", if that), but I want to make it last until this fall when I get a 700R4 and new driveshaft made.

Any knowledge/ comments/ b.s. appreciated.


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'69 Chevy Custom/10 SB
'74 GMC Suburban 4x4
'66 Mustang Sprint
'77 Sportster