Driveline vibration problem

[ccannon222]

Last year I bought an 85 shortbed toyota pickup with 33's and a 5 inch skyjacker lift kit.  It has a bad driveline vibration between 25-30 mph and again at 50 plus.  I swaped in the driveshaft from my 85 4runner to see if it was the driveshaft.  No change.  I inspected the t-case pinion, no plus, nut tight.  The rear diff pinion nut was not tight, and the pinion had play.  So I swaped in another 4.10 4cyl diff.  No change in the vibration.  What else could be causing this problem?  Has anyone else had vibration problems with the 5 inch SkyJack lift kit?

Thanks

Chris

[Mike D]

are you using the stock d-shafts

[KYOTA]

Bad driveline angle, you need to have a CV shaft built and correct the pinion angle. Cut the spring perches off the axle, rotate the pinion up so its pointing at the t-case and weld new perches on the axle.

[FIREBALL]

Call Jess at high angle, he can help you out. http://www.highangledriveline.com/

[ccannon222]

What I don't understand is I have a friend with an 85 4runner who had the same lift kit/setup and no problems.  Also, my 4runner has about half an inch less lift with no problem.  I would think that since SkyJacker sells their kits a bolt on that they wouldn't sell a setup that didn't work.  I do not want to have a driveshaft made up now because I am going to put a crawler box in it next summer.  I will have a CV shaft made for it then.

Thanks for the help.

Chris

[shifter]

 check the alinment ?? min did the same thing..

[leorn]

still using my front springs from that lift.  i never had vibrations!  Do you have the shims underneath the leaf pack to correct your pinion angle?

[ccannon222]

I've tried it with and without the shims.  No change.  One of my friends who works on cars a lot said it may be a bad wheel bearing.  Could that be the case?  I have a 94 rear that I am building to swap in. 

chris