i have a 1990 cherokee.. and id vibrates really bad when i hit about 50... i have 4 inch of lift.. some one said i need transfer case spacers.. what els could make it do that?

 

its the angle of the driveline and a transfer case drop will help get rid of most of the vibs, i did it on mine and i dont have any more vibs. tc drop is a lot cheaper then a sye and new driveline.

 

If it is the angle of the driveline that is doing it then yes a TC drop would be the cheaper and easier way to try to fix it. If that doesn't fix it then it could be a number of other things that could be causing it. The best thing to do then is get with someone that has had to deal with things like this before and have them take a look at it and see what they can find as well.

Good luck wuth it though hope the TC drop fixes it.

CJ

 

You should try balancing yur tires. I have a 4.5inch lift with 1inch tc spacers and still had vibes at high speeds...lk 50. So I rebalanced all my tires and all the vibes went away.

 

You could also try shimming your diff, that would help reduce some of your driveshaft angle (at least on the diff side).

 

Hey i had the same problem too! And it was the angle of my front drive line. Sense I didn't get to it in time.. I now have to replace u-joint's and the ball that in the drive line that connect up the the drive line.