ive got a 92 camaro rs with 305 and 5 speed. im guessing that my stock rearend is a 3.08 is that right? when i got the car they said they put in a rearend out of a 93 Z28 and says its posi trac? what is a 93 z28 rearend ratio? and is it posi trac? Thanks

 

ok i might have figured this out?? my stock rearend was a 3.08 and the 93 Z28 rearend is a 7.62 with a Auburn posi trac. is this correct?

 

The 7.6 is the ring gear size, not the gear ratio. If the 93 is a limited slip, it probably has an Auburn. Check the following link for info/pics that will be of use:

https://www.thirdgen.org/forums/tran...-10-bolts.html

JamesC

 

There might be identifying numbers on the front of the pass side axle tube - but even then, there's no guarantee that what it says is what's still in there.

THE ONLY way to know for sure, is to pop the cover off and count teeth.

 

well i know for sure its a 93 z28 rearend. i thought maybe there was some info on stock 93 z28 rearends?

 

ok here it is. the stock 93 z28 rearend is 3.23 with auburn posi rear end.

 

There is plenty of info on stock rear ends - but you have to consider ... not all rears are posi and there could be 3-4 different gearing setups for any one year of car. Doesn't matter if it was a V6 or a V8, manual or auto - the rear could be one of several different gearing possibilities.

 

OK - if that answer makes you happy. But still might not be accurate.

From Camarowiki: "M6 cars offered with either 3.23 or 2.73 rear end ratios due to the 2 different 6 speeds offered in that year."

Now - that mentions manual 6 speed cars, 2 different rear gear options. Doesn't state posi or not, and does not give any info for the automatic tranny cars on that site.

AND - none of this takes into account that X number of people owned that rear end in the last 18 years before you - 18 years is a long time for anyone to have a chance to change the rear gearing - folks do it everyday, otherwise Randy's, Richmond, Eaton, etc. wouldn't be in business!

Again I say (and 100% of TGO members will agree with me on this) ... THE ONLY way to know for sure is to pull the cover and look if you REALLY want to know what's in there.

Not trying to be a jerk here - but assumptions get you nowhere quick.

 

True ish.