Rubedizzle

iTrader: (1)

Got a rear end from an unknown year trans am, I know it had TCS. I am using it for my firebird's drum to disc brake swap.

In any event, was wondering if somebody could confirm what type of differential this is, as I am looking to sell it and don't know a darn thing about it.

Picture is below, I believe it is a Posi-Rear, it was from an automatic car, so I believe it should be 2.73 gears. Can anybody give me any more information about it, that might help?

Thanks!

Duffster

iTrader: (103)

I'm guessing the ring gear is around 48 teeth and the pinion is around 14....which is 3.42...
but thats just a guess... you can count for sure...

FirstYrLS1Z

iTrader: (4)

differential looks Auburn putting it from a 98 or earlier T/A.From the position of the ring gear in relation to the carrier,it looks to be a 2 series,making it a 2.73:1.
Since it had TCS,95 and later.
from a 95-98.

01ssreda4

iTrader: (96)

Looks like an Auburn with a 3.23 to me. There should be identifying numbers around the edge of the ring gear or count the teeth.

southpaw0314

iTrader: (5)

my guess would be 3.23 if it was from an auto.

Rubedizzle

iTrader: (1)

Thanks for the help folks! Found the numbers on the edge of the ring gear - 41:15, making it a Auburn with 2.73 Gears from a 97 Trans Am.

Thanks a ton, really appreciate everybodies help.

Last question - are these worth much? Found out car it came from had only 70,000kms.