I have a cyclic vibration in a totally new drivetrain that I would usually associate with a problem in driveshaft angles. If I put the car on a lift and adjust things so that the transmission pan rail is flat, the angle of the 8 3/4 rear chunk as measured at the mounting pads for the pinion snubber is 3 degrees down. This is NOT a RACE CAR. The priority is to have a smooth ride on the highway. Is 3 degrees enough to cause this? Should I be striving for them both to be 0 degrees (parallel).
If so, can anybody suggest a source for angle shims for the spring pads?
