I put a 4" trail-gear rear lift kit on my 93 pickup and I'm wondering why my shackles are angled the way they are. Right now the rear axle housing is hung off the leafs with no 3rd member or axle shafts in it and my shackles are angled / forward not backwards. I moved the spring hangers 5" forward center of the bolt to center of the bolt. Is this because there's no weight on the springs of do the spring hangers need to be moved? Any help is great thank you!

 

Move hangers. Tack on. Check angle. Then weld out.
Rotate rear pinion too.

:wabbit2:

 

whats the proper angle im looking for with no weight on the springs? how do i rotate the pinion? i welded the new spring perches on the axle at the same angle the stock ones were. sorry im a newb and this is the first serious modifaction ive done to the truck. thanks again!

 

I'm not much help but this might help you out. As far as the angle, I would tack the hangers on check angle, then untack and move as needed and after your pinion angle is set, then finish weld it. Of course you can use shims as well, but since your welding new perches on I would thing it's better to weld them on at the correct angle to begine with and avoid the shims altogether.

http://www.4crawler.com/4x4/CheapTri...n-Measurements

Wabbit stop me if I am wrong.