You can buy an angle finder, and use it to compare the angle of your transmission centerline and the pinion shaft. They should be the same. There should be some deflection in the u-joints, so that they "work" as they go through 360 degrees, but not excessivly so. David C. Wilker Jr. USAF (RET) ---- Johnemory@xxxxxxx wrote: Paul W. wrote: <Also, if you rear end is sitting too high, you may have to adjust the drive shaft angle. Does this car vibrate on acceleration at around 30 to 40 mph? If so, that is why. There usually are shims under the mounting for the drive shaft center bearing, and also at the rear axle support struts. These need to be added or subtracted in order to obtain the correct angle. The procedure is outlined in the FSM> Actually, it does vibrate around 30 to 40. I've long thought the drive shaft and/or u-joints were to blame. After having the u-joints re-done, the vibration seemed to lessen, maybe because I adjusted the shims on the center carrier when I re-installed the shafts. I guess more adjustment there and at the rear axle struts is in order. John New Mexico ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to iml.webmonster@xxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm