Vibration after lift On my 98 100series - help me out!!

[Skidoo]

Yep TBs cranked to high. Dropped them about 3/4 in and all is good to go.
So here’s the next question I have, if I put on the diff drop would raising the front to level doable?

No. Drop diff reduces stress on CVs caused by lifting. You can get more travel in front with aftermarket UCA and extended travel shocks.
This will allow some increased lift while maintaining droop spec. Enough to level truck? maybe or not.

Folks make sure you measure droop (~2.5in) after lifting front, cranking t-bars is too easy. Just because the bolt turns does not mean any setting is good. Too little droop means loss of steering control on rougher roads. Think about that, 7,000 lbs flying down the road with spotty steering when it gets rough.

 

[FlyPhishCruiser]

What are your current measurements Rake and Droop?

After adjustments I got 21.5 up front and 22.5 in the rear (865s) no vibrations.
Disappointing part is that I also replaced the rear upper control arms to fix the “thunk” in the rear. It did fix it some but I still have a little “thunk” back there.
Ujoints seem fine. So I guess it’s gonna be a hunt it down job from here