Rear end noise and vibration

[jack]

Anyone ever have a high speed noise/vibration comming from the rear. If i run it up at anything over 90 mph i seem to have a noise/vibration until i slow to 75mph. At highway speeds its quiet and smooth. Ive had the tires ballanced and everything is tight (bolts). Any suggestions?

[blk04cobra1]

some have said it could be the driveshaft/halfshaft/clutch....ive heard all those opinions...best thing to do is take it in to Ford and say it vibrates/noisy at 65mph--not 90mph...and see if they can do anything for you...

[flynfink]

probably driveshaft needs to be indexed. Has it always done this? Have you lowered the car? Had the driveshaft out?

[jack]

It has done this for as long as i have owned it. I now have 8,000 miles and i bought it with 4,000 miles. It hasnt been lowered or had the driveshaft out unless the first owner had it out.