GM8 ● Confirmed

Chevrolet · Regular Production Option

Rear axle - 2.56 ratio (Economy)

Years 1963–79 Models 3

Also described as 2.56:1 rear axle2.56 axle ratio

Documented applications

Camaro →

• 1970s ● Confirmed

Impala / Full-Size →

• 1963–70s (varies) ● Confirmed

Nova / Chevy II →

• 1975 ● Confirmed

This page aggregates every documented appearance of GM8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.