88 toy has an odd vibration between 55-70 mph and when coasting in neutral . I have 32" mtr's tires and I thought it could be the tires but when I apply the clutch there is no vibration.... I'm stumped . So any suggestions would be awesome!

 

88 Toy what?
Trucks and 4R can have different issues.

 

Pickup 4x4 22re 4cyl

 

Push up hard on the drive shaft U-joints at the trans, center bearing and diff for any play.

 

U-joint probably.

 

Thankyou

 

Update... U-joints are new , tires are balanced and the vibration is still there... Its a pickup btw. Sorry I missed that question

 

Transmission output bearing.(probably wrong name). But where your rear driveshaft connects to your tranny. Just a guess

Edit. Was the driveshaft balance tested after u-joint replacement. Maybe slightly bent. Mine was. Or could it be in the front end? A lot of years and miles. Are the ball joints stock?

 

drive shaft is brand new