I just got my trans installed and the guy did an excellent job but my vss sensor clip came loose so he needs to do that but no biggy anyways, while it was on the lift I seen I have a 9 Bolt Borg Warner rear and the guy said it was a posi rear. Now did camaro's come with 9bolts b/c I thought they were 10 bolt and two my rpo is G80 which means
G80 : AXLE POSITRACTION, LIMITED SLIP....So is this posi or limited slip differential where only one wheel spins b/c when I light them up I only have one track behind

 

9 bolts, 10 bolts and dana 44s all came in third gen f bodys. only differance in posi and limited slip is the spelling

 

99+% of 9 bolts were posi/limited slip. Sounds like your posi unit is worn out. They are available at www.9bolt.com

Miles
Diff Solutions

 

I noticed today that are two burn out marks where I last lit them up and on the rack If I hold one and have the mechanic try to spin the other it can't be done, so maybe it isn't worn..

But out of the 9 bolt 10 bolt and dana44 which is better or how would they be ranked 1 the best 3 the worst

 

and would this be the 7.75 I have or the 7.625, which one?

 

9-bolt: 7.75"
10-bolt: 7.62"