Guys:
I have a question about the 12 bolt rear in my 66 Cutlass, it came out of a 70-72 Chevelle. Everything worked fine, I recently upgraded the rear brakes from 9 1/2" to 11" dia, the diff sat open for a couple weeks while doing this, everything went back together fine. When the chassis is on stands and I roll the RS tire over, it catches and both sides roll, when I roll the LS tire over, the RS does not roll, there also seems to be a bit of lag between when they both do catch. Is this something to be alarmed about? What could I check to see if there is a problem? I refilled the diff with 85/140 lube for an open rear and used a Lucas additive for Posi rears, the guys at the parts store told me this was correct. Any help would be great.
Thanks, Ron

 

Not sure what your asking?

Are you sure your car is limited slip? Please send a picture of the unit.

Jim

 

Jim:
Positive it is a limited slip diff, the vast majority seem to think the clutches are worn. As I stated in the post, both wheels do not roll when turned. I was asking what may be the cause of both wheels not turning.
Thanks, Ron

 

Jim:
I just you a PM
Thanks, Ron

 

Got it Jim