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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LG3 / LG4 Factory-verified

    Chevrolet · Regular Production Option

    305ci 2-bbl / 4-bbl V8

    Years 1976–82 Models 1 Factory citations 2

    Documented applications

    Impala / Full-Size
    • 1976–1982 Factory-verified

      downsized-era engines

      GM Heritage factory kit — 1977 Chevrolet, p.6.
      GM Heritage factory kit — 1979 Chevrolet, p.4.

    This page aggregates every documented appearance of LG3 / LG4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.