For the last couple of years, I have been experiencing a bad suspension rock, from the left rear to the right front. I want to attempt to get rid of this rock before I go about throwing more parts at the truck (85 Toyota 4runner)
Let me describe the suspension setup real quick. I am running 48" springs where 46" springs used to be. The springs are new (one trip) Old Man Emu's. The stock length 3.5" long shackles have been replaced with 6.5" shackles, with no change to the front spring hanger. The shocks are 15" Travel BBCS's (again, 1 trip old).
Side view of the suspension with the old leaf springs. New ones are the same length, just more arch.
Idea of the current front shackle angle:
I also recently installed a ford explorer sway bar, with little effect to the problem. I am a bit worried the angle of the links.
Out back, I run 63" 1990 Chevy Springs, with a pro comp, and a rancho add a leaf (total of 5 leafs plus overload), with 6.5" shackles. Again, I installed the add a leafs to help combat this issue, with no return. For shocks, I run some 12" travel Monroe's these replaced the 5100 bilsteins).
The only other item I can think of that could be contributing to this issue is the welded rear differential.
If any more photos, or any measurements are needed, let me know.
Thanks for the help.
Let me describe the suspension setup real quick. I am running 48" springs where 46" springs used to be. The springs are new (one trip) Old Man Emu's. The stock length 3.5" long shackles have been replaced with 6.5" shackles, with no change to the front spring hanger. The shocks are 15" Travel BBCS's (again, 1 trip old).
Side view of the suspension with the old leaf springs. New ones are the same length, just more arch.

Idea of the current front shackle angle:

I also recently installed a ford explorer sway bar, with little effect to the problem. I am a bit worried the angle of the links.

Out back, I run 63" 1990 Chevy Springs, with a pro comp, and a rancho add a leaf (total of 5 leafs plus overload), with 6.5" shackles. Again, I installed the add a leafs to help combat this issue, with no return. For shocks, I run some 12" travel Monroe's these replaced the 5100 bilsteins).
The only other item I can think of that could be contributing to this issue is the welded rear differential.
If any more photos, or any measurements are needed, let me know.
Thanks for the help.