Axle Ratio & Identification: Notes

Rear axle ratio, differential type, manufacturer and build date information is stamped on the forward side of the right axle tube except for "B" axles and Corvette. A tag giving this information is attached by a cover bolt at the seven o'clock position on "B" axles. Corvette axle information is stamped on bottom edge of differential carrier flange.

First two LETTERS indicate axle code, and third LETTER indicates manufacturer: "B" = Buick, "C" = Chevrolet Buffalo, "D" = Cadillac, "G" = Chevrolet Gear and Axle, "K" and "M" = G.M. of Canada, "O" = Oldsmobile, "P" = Pontiac, "W" = Chevrolet Warren.

Axle shafts on "B" types are retained by an outer retainer bolted to the brake backing plate and an inner retainer which is pressed against the inner bearing race. All other axles are retained in housing by "C" locks positioned in circular grooves near inner ends of axle shafts.

Axle Ratio Identification