Okay heres the issue installed a detroit locker works awesome now my problem is the when I get on the gas the rear end wants to push out to the left I have replaced the shocks and its still doing it. a four wheel alignment was done in 07 and was in great shape. I have high load leafs on order. Am I going to need a rear sway bar to solve this?

 

First Idea that comes to mind is your tires. For a locker they have to be the exact size, air pressure and close enough to same tread wear. If off a bit, even on air pressure one will try to pull more than the other due to one is rotating faster than the other side.

 

I doubt a sway bar would solve an issue like that. Are you 100% sure that one of your two back tires isn't more worn out than the other? That could cause what you are talking about.

 

Dang! You beat me to it Crazy.

 

Slow poke! Just like your truck. JK

 

LOL! My truck goes as fast I can push it right now, since it's missing part of the drivetrain!

 

Yep, different sized tires and/or different pressures will cause this. It it a constant push to the left or a slight "wiggle" when you get back on the gas?

 

Its a push to left when I shift gears from 2nd to 3rd and 3rd to 4th. But I will check the tires pressure the tread depth is the same for both according to Abe Lincoln. Without having driven a truck with a locker rear end it feels like rear end is twisting in the direction the drive shaft spins. The bearings for the pinion gear are new, there is no sound coming from the rear.

 

So it only does it when you shift for a brief moment? That's normal for most lockers.

 

Okay cool now how do I dampen it out if it can be done?