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Sad to report that after the shim install the cyclic vibration is still there

Ugh






Chris, while you posted your angle findings initially as 3 degrees down on the tranny, and 4.5 degrees up on the pinion, you had some hesitation on those values as being accurate IIRC, have they been confirmed?...if they were, and you installed the 2.5 shims you ordered to rotate the housing nose down, that's still not enough to counter act the transmissions 3 degree down angle, or the pinion's upward 2-4 degree rotation on acceleration, as I posted earlier, among other things to consider are: is the driveshaft facing the correct way, has the balance ever been checked/redone?, condition of the tranny mount? lots of questions/variables to confirm

Mike



Mike the initial readings were 2º down on trans & 4.5º down on rear end (using the example that Robx gave me by putting gauge to 0 the gaps opened up on the bottom...)

The drive shaft was is/new & balanced on 2 separate occasions. Trans mount is/was new also when I started battling this a few years ago.
Not sure what yo mean about the drive shaft "facing" the correct way?

I have not remeasured the angles as of yet.....

1MYTGTX