drivetrain vibration HELP!
 

god this seems like a common problem with anyone doing mods to their car. ever since i put in my 383 crate engine, ive had terrible drivetrain problems. i have a terrible vibration, since it has started ive gone through 3 u joints and 2 driveshafts, and not to mention a pinion yoke. i thought it was a driveshaft not being balanced, but spinning the driveshaft this morning i heard a grinding noise in the axle housing. does this mean that the pinion depth was wrong after the pinion yoke was put on, or bad bearings, bent pinion??? i will mention that my torque arm broke away and fell off of the car about a month ago when i was on the road driving when i gave it some gas, and since that controls the pinion angle, i was certain the pinion was bent, but it seems i hear more and more things everyday as to what it could be!! can someone suggest some good advice?

Re: drivetrain vibration HELP!
 

Sounds like there is a very good possibility the pinion angle has been incorrect for quite a while.... to the extent that the excessive angle has caused vibtrations, fatigue and excessive wear on virtually every component of the drivretrain, including the torque arm.

Re: drivetrain vibration HELP!
 

im tearing the rear all down this weekend so we will see what happens, i just hope that once it is all put back together i will have this damn problem solved!! if not i guess i can just single out the idea that its nothing in the rear :confused: but i find that hard to believe!

Re: drivetrain vibration HELP!
 

Make sure the pan hard bar is not bent... Did you tow your car anywhere and strap it down by the bar? This happend to me and I have the SAME, and I mean the exact same problems you are having right now. I am going to install a Umi adj. TA soon, (it is in the mail) I hope that will fix it along with a new panhard rod.
Steve