Optional Rear Axle Ratio (3.08 carrier)

Years 1970–82 Models 4

Also described as 3.08:1 rear axleRear axle - 3.08 ratio3.08 rear axle

Documented applications

Camaro

1970s Confirmed

Corvette (C3)

1974 Single-source

$12.00; 1,219 built (GU4 code label only on Corvette Action Center; option itself in 3 sources; the factory kit price schedule lists axle codes G92/G95, not GU4)

Nova / Chevy II

1975 Single-source

C/K Trucks

1973–82 Confirmed

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This page aggregates every documented appearance of GU4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.