Stuck posi clutches

[Lynn]

Put some modern radials on and did the fig 8's and lots of circles both left and right.
No go.
Took the carrier out last night & removed the spring pack. Couldn't get the side gears to move on the bench. Was getting late, so I sprayed penetrating oil on the clutches from every angle and put it back together without the springs pack. More grease and another bottle of GM posi additive.

Was 11 by then, so didn't take the time to go do figure 8's. Drove home the 30 miles and the clutches are still stuck. Hmmm... I am starting to think the buy that "blue printed" this rear maybe got things a little too tight. Didn't measure clearances on the side bearings and spider gears, but suspect that may be my issue.

Not much time to work on it this week, so may have to wait a week on this. Sure cuts down on the driving enjoyment. Here I have this killer Z that runs very well, and it feels and sounds likecrap going around a corner. When pulling out of the gate, I normally just punch it so at least all I am getting is tire spin.