1973 GTO Rear Axle Codes

Differential Ratio

Non Safe-T-Track Sticker Code

Safe-T-Track Sticker Code

3.08

AD

CD

3.23

AE

CE

3.42

AJ

CJ


A sticker with the code was applied to the left brake drum.
The code was also stamped in the axle housing to the right of the carrier.