I have busted 2 rear u-joints in my '69 Firebird since installing the new rear end and suspect a pinion angle problem. Could the new springs be an issue? Would a Camaro 12 bolt have the perches in a different angle than a Pontiac 10 bolt?
The first joint was provided by Hauser with the new 12 bolt rear, Pontiac shaft to Chevy 12 bolt type...it was a heavy duty unit. It snapped at E-Town in the spring...only about 100 miles on it (many of you may remember). The second was a heavy duty Spicer that came installed with the new drive shaft which used Chevy style all around (pictured below and at the attached link). Both times the bearings seemed to fail. The ends that are bad are the rear pinion side, not the drive shaft side. What would cause wear like this? The bearings were powdered!
u-joint pictures
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All of my cars are Hybrids...they burn gas and rubber!
'73 Ventura, Spotts 462 roller
10.785 @ 122.79, 1.507 60 ft
2850 lbs. plus driver, 3150 race weight
'69 Firebird Convertible, Spotts 455 with long branches
12.561 @ 107.62, best on old 455
4290 race weight
'72 Formula 455 HO
numbers matching auto, work in progress!
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