I should have specified. What I measured about 5 degrees negative was the drive shaft angle toward the pinion as it was still hooked to the yoke. I unhooked the drive shaft from the rear pinion and rotated the pinion yoke around so I could attach the magnetic angle finder to it. I got 2 degrees positive that way. I'm going to do the same thing with my 71 Cuda and make sure I see a difference. That car has an 8 3/4 with 4 speed, and if I'm doing this right, should be negative at that spot. The 71 does not chatter. Just comparing.
