Drone/Vibrations on Highway 70 mph +

[thepdk]

Thanks for the help,

If it does make it better does that mean its the shaft?

 

[md21722]

It could very well be the pinion.

Just rebuilt my rear axle to cure what I'd calling a cyclic humming and slight vibrations starting around 65.

 

[mako my day]

If it's better, there is an issue with the rear.

Take pics of driveline setup. Show and tell.

 

[thepdk]

The problem has been Solved!

Even tho the drive shaft looked newish and good, I took it into a shop and got it balanced and straightened. Drives smooth and silent now.

Thanks for the help.