Alignment issue

[BobbyA]

Here is the problem. Had a 3.5” lift installed and everything was fine. Went wheeling and blew up the spider gears in the rear. Had it rebuilt, drove a little bit and everything seemed fine. I was out of town when this happened then decided to have AAA tow it the rest of the way. After it arrived, it wants to dart right once I let go of the steering wheel.
Could the tow truck have bent something and what would be the first thing to look at. When I had the alignment done after the lift, caster showed .8 on drivers and .9 on pass. Now the pass is -1.3. What could cause this drastic of a change only on one side?
Any help would be greatly appreciated.

 

[BobbyA]

It’s a 69 with a Dana 30 by the way.

 

[Broncobowsher]

So many options. I would start with the rear springs. U-bolts tight, spring bushing good.
Next would be bump steer in the front. When the angles start getting steep, even without bumpsteer, there is a darting feel as the front shifts side to side as it goes up and down.

 

[BobbyA]

Rear springs did get loose, but have new u-bolts and everything is tight. Still happening. I guess the big issue is why the right front switched 2 degrees of caster and the left side didn’t.

 

[gnpenning]

What kind of tow truck??

Roll back, wheel lift or sling??

Roll back would depend on where they hooked the winch line

Wheel lift how was it strapped down?

Sling, how were the chains or hooks mounted?

Could very well have nothing to do with the tow. What was happening when you blew up the rear end?

 

[73azbronco]

how big a jump did you do?

 

[Broncobowsher]

King pin bearings shot?