Positraction rear axle

Years 1962–82 Models 6 Factory citations 15

Also described as Limited-slip (Positraction) rear axleRear Axle - PositractionPositraction rear (4.11)Rear axle - PositractionLocking rear differential (Eaton auto-locker in later years)

Documented applications

Camaro

1967–1969 Factory-verified

required with 4.10/4.56/4.88 (67-68), 3.73/4.10 (69)

GM Heritage factory kit — 1968 Chevrolet Camaro, p.30.
GM Heritage factory kit — 1969 Chevrolet Camaro, p.45.
1970–1981 Factory-verified

GM Heritage factory kit — 1970 Chevrolet Camaro, p.8.
GM Heritage factory kit — 1981 Chevrolet Camaro, p.9.

Chevelle / El Camino

1964–1972 Factory-verified

GM Heritage factory kit — 1964 Chevrolet Chevelle, p.9.
GM Heritage factory kit — 1972 Chevrolet El Camino, p.8.

Impala / Full-Size

1963+ Factory-verified

$43.05 for 1963

GM Heritage factory kit — 1963 Chevrolet, p.12.

Monte Carlo

1970–1972 Factory-verified

15,911 MC in 1970

GM Heritage factory kit — 1970 Chevrolet Monte Carlo, p.75.
GM Heritage factory kit — 1972 Chevrolet Monte Carlo, p.15.

Nova / Chevy II

1962–1967 Factory-verified

GM Heritage factory kit — 1963 Chevrolet Nova, p.6.
GM Heritage factory kit — 1967 Chevrolet Nova, p.8.
1968–1973, 1975–1979 Factory-verified

GM Heritage factory kit — 1968 Chevrolet Nova Coupe, p.61.
GM Heritage factory kit — 1979 Chevrolet Nova, p.10.

C/K Trucks

1964–66 Factory-verified

All light trucks (1963 GVW selector shows G81 — likely OCR/early variant)

GM Heritage factory kit — 1964 Chevrolet Truck, p.15.
GM Heritage factory kit — 1967 Chevrolet Truck, p.21.
1967–72 Confirmed

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1973–82 Confirmed

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This page aggregates every documented appearance of G80 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.