drivetrain noise,and pulling to one side.

coming from when i try to take off,worse in reverse.when i shift gears it makes a noise,but not everytime.pulls to one side if im cruising and i let out and tap the throttle,or sometimes when im cruising and let all the way out of the throttle.has a bad vibration from 20-30mph,but then gets smooth,regardless of if the clutch is in or not.


sounds like the rear end is loose,but ive checked all my u bolts and they are tight.sometimes it sounds like its near the tranny,other times farther back. i kinda checked the driveshaft,didnt seem to have any play.
started happening about 1k miles ago,about 3 months after 3" block install and cranking the torsions..


any insight is greatly appreciated,its really bothering me and im stumped(havent done much with leafspring suspensions)

Sounds like a combo of the following:
Drive shaft pinon angle
Rear End not squared up
Carrier Bearing could be going out
U Joints could be bad
Bent Wheel/ bad tire
Front torsion bars not set equal...This will cause the pull real bad. It may visually look level but under load and driving it will have adverse affects.


Those are just my thoughts on this. I am sure tweaker, HocBJ, or Todd will get on this and have a more technical answer as those three are pretty smart. Also I know others have had the EXACT issues so I am sure you will get some answers.

****edited****

Good call...like I said one of those guys would be on.lol Thanks Tweaker!!!