Keep in mind mini trucks and an SAS like this the shackle is trailing rather than leading like on stock 40/60/62. So longer shackles create a different geometry problem.
I'm still trying to wrap my head around what Jeremy is suggesting (short shackles) because longer shackles on a mini truck would slacken the caster and tend to make the steering
slower and
less reactive. Guess it must be that if caster is too positive the steering no longer wants to return to center at all. It just wanders through life aimlessly, you know like most of us Yotaheads.
There's also the case where the he actually needs different length than stock shackles. The stock length are right for a stock truck and springs but that doesn't mean they're right for lift springs or an SAS. He had to notch the frame after all... ;-)
So do you have the numbers from the shop
@dan1554? What is the caster?
The general advice is that steering dampers are a band-aid. If replacing yours or adding a second fixes your death wobble then that usually means you have more fundamental issues to solve. And if it's a question of already too slack caster adding more damping to already slow steering will have no effect at all, might even make it worse.
But to add to the equation even though there's really nothing you can adjust your rear suspension in an alignment and overall stance impacts steering. Since Dan's got the bro lean going (e.g. SoCal pre-runner look) it's possible that his caster will be fine once he gets it level or slightly stinkbug.
For example, I put 2° wedges on my rear springs trying to fix up the rear driveshaft angles (Toyota doesn't use double cardens on 2005+ Tacomas so they are real touchy about rear lifts and pinion angle). That and the 3" of rear inches of lift made the steering more sensitive.
You know, it's also possible the axle is bent. Do you know it's history?
