Originally Posted by XIONM7716
I belive the shaft is balanced. there is a wiegth welded on it. Ann the place i took my shaves in is a reliable place. The wheel bearings are still good, no play in them or noise coming from them. I probubly broke some teeth in the dif or broke the bearings in the dif. it's still just a stock non lsd dif.
Thanks for all the help. If any one could think of any thing else I'll be more then happy to look in to it.
i doubt you broke the ring gear, there have been plenty of cars running round on the factory rear end making 500+hp and not killing the diff, if anything you'll break the axels before you destroy a nissan rear end.
have you tried checking the tightness of the driveshaft bolts, even if they are slightly loose the vibrations will be insane.