A cause of vibration on acceleration can be poor motor or transmission mounts, in addition to shifting of the location of the driveline due to motion at the back of the car. This could be caused by a broken spring leaf, or a missing/sheared off locating pin on the spring, or some other structural problem in locating the rear axle. If the car has a two piece driveshaft, I'd first take a close look at the carrier bearing and the rubber that holds it in place. Then I'd check for slop or play in the left side front motor mount. Probably the trouble is going to be found in those areas. Dick Benjamin >> IMLers, >> >> Ok, so I have had all of my front end rebuilt and >> have >> installed the IML recommended KYB shocks. ?However, >> I >> still experience some slight vibration in the steel >> column/steering wheel during acceleration 20-40 mph. >> >> Does anyone have any ideas? >> >> Also, do the KYB shocks have any break-in period for >> them to soften a little? >> >> I appreciate anyone's and everyone's thoughts. >> >> Rob Goodyear >> 64 Crown Coupe & 1/2 of 64 Crown 4 dr >> rob1964cc@xxxxxxxxx ----------------- 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 webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm