T74 ◑ Single-source

Chevrolet · Regular Production Option

Left hand rule of road

Years 1963–79 Models 1

Documented applications

Impala / Full-Size →

• 1963–70s (varies) ◑ Single-source

  This was for exported cars and had to do with the aiming of headlights for LH driving

This page aggregates every documented appearance of T74 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.