Drivetrain issues after changing lifts

This weekend I removed my 3 inch Procomp lift and installed a 3" OldMan EMU lift. The Procomp lift had some sag in it so the jeep did gain about a inch or two of actual lift. I am pretty sure I will now need a SYE sine I do get some vibs from the drive line under accel.

Now the odd question. Drove the truck abour 75 miles with no problems. Today on the way to work while letting the truck slow down with out the brakes I heard a grinding vibration noise. It only happened at around 5mph and only random. I guess I was wondering could the u joinjts go bad that fast with only a 3 inch lift? Is there anything I should look for?

I will take a picture of my drive line tonoihgt and post it up but I am now to this stuff so any advice would help. Thanks

The ujoint could have been worn before, and changing the lift changed the angle it rides out, moving out of its 'worn in' grooves.

Which would make it suddenly feel bad, yes.

Makes sense. No I guess I need to decide how quickly I can get the SYE done so I don't have to change ujoints in a drive shaft thats no longer going tbe used...

Drive line picture can any one letll me if my pinion angle is off? Thanks

This shows an approximation of the two angles. This would technically be off by just a bit. Some times almost doesn't cut it. See if someone on the boards will post with their experience, this might be just fine. It might be enough to do damage though.

Your pinion should be parallel to the t-case. You only want to point the pinion at the t-case when using a CV shaft.

Go to home depot buy a angle finder then do what this article says to do with a stock D/S....Jeepwire.Com Presents: Setting Your Pinion Angle . you cannot guess.. you have to know!! have fun!!!!!

Well drive shaft is out and the SYE is getting ordered. I will go from there.

Even with a sye your still going to need to check your angles and probably shim also... in the same article..