chefeagles

My springs were frowning so i had a local spring shop make a another srping to add to the leaf pack (Which was what they suggested to do cause i was ready to buy all new leaf spring). It went in the second spring possition. It was sagging almost 2inch and added the spring to the packs lifted almost an inch over stock (its sitting at 17 13/16)

but now im getting what seems like some rear drive shaft vibs. And it only seems to have vibrations when im on the gas. I dont hear it when im coasting.The front sits at about 7 7/16 whice isnt bad. Im planning on lifting up the front about an inch also so it doesnt sit like a mussle car or a cat in heat anymore..

so do i need to lower the tcasee cause the rear is a little over stock height??
A tcase lower kit is basically just a spacer that goes between the crossmemeber and unibody right?

colorado_96

With that little amount of lift it shouldn't make a huge difference. Have you checked your u-joint's?

chefeagles

i didnt check them. i did pump some grease in them but that didnt help.
i should just try and move/pry them with a big screw driver? they shouldnt move at all right?

77olds

Look at your driveline angles.

If the front u-joint is at a different angle than the rear, that's bad.

chefeagles

that would mean the ujoint was bad?

DFlintstone

I just wanted to second that you might check your U-joints, one of the few things that regularly go out on my old Jeep. There should be no play at all, (tough to feel sometimes). If you put one finger on the gap between the ears, then rotate the shaft back and forth with the other hand, sometimes you can feel the play.