[Bill Eveland]

69f bird, I would think your angle at the trans sould be positive-lower at the rear. When the pinion angle rises on acceleration your probaly almost 4 degrees in differance between the pinion and trans. You almost need to raise the angle at the trans 2 degrees (drop it down so it's level)or drop the pinion angle 2 degrees so they match better.
What was your working angle of the u-joints? With the car level and u-joints vertical, measure the angle of the driveshaft . Than subtract the angle at each end.

[meanken]

I'm with wrench, and tin injun. If it was a binding problem, all 4 posts and caps would be blue and scored. There appears to be no damage to the ends in the shaft, only the ones bolted into the pinion.

[fiedlerh]

For the driveshaft to work correctly the transmission centerline and the pinion centerline must be parallel. For a street car, parallel can be set up when the car is at rest. For drag racing, parallel can be set up for average "windup" angle the rear end.

[buwalda]

Very strange to see the bluing because there is very little relative movement between the rollers & the mating metal [ otherwise the grease would melt ! ] I lean towards what DOC said, are the caps somehow moving away from the shafts, cocking & breaking off the ends? Caps able to move, not secured by circlips?

[Lerry: The Body Ventura..]

Another thing is, when installing drive shaft and tightning u-bolts. After running your will need to retorque bolts again. They loosen theirself. Especially after a hard run with slicks. It will be the two upper or lower bolts(which ever way facing).

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69fbird
What did you use as wedges for your 2 degree angle?

Thanks