If you put a 2" lift in the rear how much do you normally space the steady brg down? My truck has a terrible drive shaft vibration above 50, there are 2" lift blocks in the rear and no spacers under the steady brg so I am thinking it would be a good place to start.

 

It's probably not aligned or balanced properly. You can do all the way up to 4" blocks and get way with not having the vibration.

 

Hummm.............thx tx.
I thought I was onto something after reading a bunch of posts about people shimming down the SB even on stock hight trucks?