Ford Repair: 92 Ford Bronco 302 V8, ford bronco, 302 v8

Question
Tony, my truck's been in storage. New transmission rebuild priot to that. Maybe 500 miles since rebuild, all highway. At 65 mph truck begins to vibrate. dis-engage overdrive or accel with passing gear ceases vibration. Could it be u joints? Think not since drive shaft is still spinning at same speed. Seems to do it around 65 to 70 and with slight incline or flat road.

Answer
Hello mike, It is possible u joints but the tires could also be "flat" spotted and causing a vibration. A vibration is a process of elimination . I would probaly try to rebalance the tires and pull the drivesaft and inspect it. Hope this helps Thanks Tony