I have been setting on 5" of lift 3" coils 2" spacer and a bastard pack and 2" shackle and 31X10.50X15 tires I measured my lift when first installed from the center of the hub to the bottom of my stock flairs @ 22" stock is 17" , my lift is sagging in the rear down 1/2" and I am thinking about beefing up the spring pack with another leaf and adding IronMan 4X4 adj shackles.I'm also thinking about replacing the coils and spacers with either RE 4.5" or 5.5" coils .I need more clearance in the rear as I just put on 32X11.50X15 Maxxis Buckshots so I lost tire room and I tow a camp trailer in the summer , I already have a slight vibration with a 1" transfer case drop and 4 deg shim on the rear axle.What I cannot decide is which coil springs to use the 4.5" or the 5.5" ?

 

You are gonna need a sye. I would do the shackles. More springs makes a stiffer ride.

 

Stop. Do yourself a favor. Do 4.5" full leaf pack with shackles and full coils upfront. That's it. No adding one leaf and new blah blah. Look at the weight you're putting on the rear. One leaf will fail faster and be a faster of money. Get regular 1" extended shackles or RE 3" lift with 1.5" shackles since those tend to sit higher.

Oh and yes on the SYE for sure

 

sycoglitch I agree with you on the full length front springs what I don't know is should I go with the 4.5" which I hear really give 5.5" add my bumper and winch that should lower it to 5" or less so no real amount of lift over what I have now or do I go with the 5.5" spring which I guess would push me up to 6" to 6"+ with my winch and bumper I'm not sure if that would put my front at 5.5" or 6" of lift.

 

I say definitely stay at current height. Get Hd springs with less lift than needed and do a 1" shackle. With your weight you'll get a smooth ride but you may wear them out. This i can't say cause i don't put as much work on my leaf springs as you. My advice, and you will probably have to spend some money unfortunately, call OME or RE, tell them what you're looking to do. You want a supported rear end so that you don't have it walking around on you.