I'm still having vibration in the rear end of my 72 Duster. I have re-balanced the drive shaft, checked all the bearings (pinion/wheel)changed the third member, tires are balanced etc. and shimed the springs to be within the 4-5 degree tolerance. However, when we did the shimming it changed where the vibration started ( it used to start around 50mph, now it is around 60 and has a lower rumble around 15 mph, although not quite as pronounced as before the re-shimming) I am at a total loss to figure this out, the only thing that I have noticed is that the springs are a little saggy ( when I have three fat boys in the car the wheel rubs on the body) could this be it, or something else.
Any help is appreciated
Any help is appreciated
