Originally Posted by wranglernut14
alright thank you i am going to the dealership tomorrow and getting them to run the vin. and as far as the spring swap is that all i need to do with it? do i need to get a adjustable trackbar to recenter the axle? i know I'm going to need new shocks but that will be after i figure out exactly how much lift i get.
If it's less than 2" net "lift", you don't even need the adjustable track bar.
PUBLIC SERVICE ANNOUNCEMENT:
The following is a bunch of math stuff. If you are one of those people who think that the workings of a Jeep and its suspension have nothing to do with math, please stop reading at this point.
Think of the axle and trackbar (TB) as 2 sides of a triangle, with the height from the axle to the end of the track bar being the 3rd side (making a right angle with the axle). From where the axle and TB are connected, to the spot on the axle that's directly below the other end of the TB, you have a distance of roughly, 35". Height from top of axle (tb is mounted on top) to TB is 3". The length of the TB (center bolt to center bolt) is ~35.2". If you add a 1.5" lift, the 3" becomes 4.5 and the TB stays the same length (35.2), so the axle is pulled over so the TB end above the axle is 34.9" (35.2*35.2-4.5*4.5 then take the square root). So, your axle shifted 3/10's of an inch. A trackbar relo bracket would move it more than 1", so if you use it, then you are actually going to end up with the axle shifted the other direction 7/10" from where it was when it was stock.