vibration after lift kit installation

[purevenom1]

Got a vibration at low speeds after pro comp 4" lift on 94 4runner. Kit was used and was on a 2wd 4runner but the kit was bought for a 4wd. still got to order a few pieces for the front diff drop. then get it aligned but the vibration has got me confused. what else could be causing it. driveshaft is not near gas tank

 

[cometobanks]

Gnarley tires? Lug nuts not seated properly? U joints operating beyond limits? About a gozillion other things...

 

[purevenom1]

same tires are on as it before and no vibration. pretty sure the lugs are seated correct since I thread the lugs all the way down by hand before I tighten them. u joints may be the likely suspect then. got a friend that works at a 4wd performance shop and is going to stop by in the next couple days to take a look. he thought the pinion angle was incorrect. he said give it a few days so the springs and shocks could settle some. got a wait for the rest of the parts to come in before i actually drive it anywhere. thanks for the reply. any options to correct it if it is the pinion angle. pro comp doesnt say anything about it on the website from what i could find.

 

[fourwd1]

Check the reaer pinion angle.
The pinion should be parallel to the ground, not pointed upward.