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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    580 Single-source

    Chevrolet · Regular Production Option

    Power front seat

    Years 1961–62 Models 1

    Also described as 360hp 348380hp 409

    Documented applications

    Impala / Full-Size
    • -1962 Single-source

      6 way flex-o-matic

    • 1961 Single-source

      4 bbl

    • 1962 Single-source

      4 bbl; hi-po solid cam; 11.0 compression; 4 speed; this engine cost an additional $320.65

    This page aggregates every documented appearance of 580 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.