Chassis reference

A 2.93:1 ratio appears in the federal 400/automatic certification test, while documented feature cars use 3.08:1; neither observation establishes every production car

rear axle · factory

Rear Axle and Ratios summarized from reviewed factory and marque references. 1973 Pontiac Grand Prix

Reference Details

Availability: factory
Notes: Engine, transmission, housing, ratio, dates, and individual-car records must agree.
Type: rear axle

1 linked car page.

1973 Pontiac

K57 two-door hardtop coupe

U.S. Environmental Protection Agency via Federal Register 1973 model-year light-duty vehicle certification data

High Performance Pontiac / Hot Rod 1973 Pontiac Grand Prix redesign