I am gonna get some autozone shackles to lift my rear. I know that it lifts 1.6 or 2.6 inches on a bad angle. My question is what is the best angle for the shackle to be at and what is the average height with that angle? Also what spacer height would be enough to lift the front the same as the rear?

 

I believe 45* is what ur lookin for and most shackles say how much lift it adds ya know? So you can buy front spacers to even it out as much as possible I guess. If you want a cheap lift why don't you go with a budget boost lift like daystar?

http://www.jeep4x4center.com/jeep-li...dget-boost.htm

 

you want your shackle to look like this > more flex smoother ride

 

45* but the amount of lift will depend on the springs. You'll get different amounts of lift with different spring and shackle combos. Age plays a part with the leaf springs too.

 

Measure your stock shackle eye-to-eye.
Measure the new shackle eye-to-eye.

The difference divided by 2 is how much lift you should get in the rear.