Ok got the drop done 3/5 using MCG parts

rear flip kit
rear drop hangers set at the 5" position
stock rear shackles.

It rides and drives great but I am getting a vibration on deceleration at times and it also comes and goes at times during steady cruise. When you sight down the drives shaft it is almost perfectly straight between the rear end and the transfer case.

However, the pinion on the rear end is angled up in relation to the driveshaft. I'm sure I can muddle my way through getting it correct but I was just checking to see if someone has done this and has a answer I can go straight to and do it and be done with it.

 

find a magnetic angle finder. factory spec on the nnbs stuff is .5 - 1 degree total angle difference.

i had to shim the trans and am waiting on degree shims for the leafs right now. for a simple 2 inch drop shackle.

 

take the magnetic angle finder.....put it on the dshaft close to the ujoint. write that degree down. put it on the rear end (the flat part under the center section) write that number down. subtract the difference should be .5-1.5 total. it seems that the rear end needs to angle down .5-1* so you can either clamp the front of your leafs or buy shims.

 

Mine is a crew cab and i did the same kit flip with a 1" lift hanger i put a 6 deg shim in and its pretty much spot on. I still have some vibes upfront but i think im gonna get my tires road force balanced then go from there

 

Thanks guys