History / OriginalityGot a question about 1982-1992 Camaro or Firebird history? Have a question about original parts, options, RPO codes, when something was available, or how to document your car? Those questions, answers, and much more!
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When I got my 1991 RS Camaro the owner had cut a 9 bolt Borg Warner rear end from another Camaro at a junk yard. It had a tag but kind of hard to read but I have most of the letters and numbers. How can I find out what car this rear end came from and what it is geared at and what year it was made in? Any help would be great and a good start.
My 9-bolt didn't have any numbers stamped on the axle tubes, it was all on a tag. One cheap way is you can rotate the wheels and count the number of times the yoke turns, if it turns 2 3/4 times around it would be a 2.77, 3 1/4 it would be a 3.27 etc etc
Just checked my axle yesterday, no stamped numbers, but think that was GM markings only for the 10 bolt. I only have a tag bolted to the diff house. Production date is there IF you have the tag. Rear gears I think have embossed value of number of teeth. Should be located on the larger ring gear.
Now that you mention it I do remember that now... I think you are right, the gear ratio is actually on a tag that is bolted to the Dif Cover... There was a larger tag with instructions to add the posi additive on the other side
The ID is 1) on the tag, and I think it was 2) identified by the large sticker...
The Tag has a Part number of the Axel, and the Gear Ratio
