ok guys this is my first post and i need help....rehabbing 1992 rs camaro ...I picked up a borg warner 9 bolt rear end..this came off a 1987 firebird ws6 350 auto but im not sure if it was g92 package...is there a way to tell what gear i got in this thing by markings or cast numbers????? need to know if i need to get a 3.42 or whatever high gear was for this rear end while its out of the car...i can live with 3.27 but not 2.77...i got that crap now with 10bolt gm poo rear end

 

Theres really three ways:

A) There will be, or was at one time, an ID tag with all the vital information on one of the cover bolts... Chances are that this tag is long gone, if so, move on to B.

B) If you open up the cover you will find that all BW ring gears have the ratio actually stamped on the side of the ring gear in plain sight. You just have to wipe off all the old oil.

C) Count the ring gear teeth and then the pinion teeth... Devide by the latter.

Good Luck.

 

thanks for the feedback ill let ya know....also what is the best aftermarket diff cover to get for these 9bolt borg warners...the old rubber stopper /plug leak a little fluid and i want it gone

 

"Aftermarket" and "Borg Warner" are 2 words that never go very well in a sentence. There is little, if any, aftermarket stuff for this diff. Bearings and seals etc are available from for local parts store. If you look hard enough, gears and posi's are available but don't expect to find a lot, if you can even find any listings for it at all.

 

And that is why I turned down buying one complete with 1LE brakes for $150.