RPOARCHIVE
Loading index…

    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LS1 Factory-verified

    Chevrolet · Regular Production Option

    427ci 335 hp V8

    Years 1969–82 Models 1 Factory citations 2

    Also described as 427 CID V8

    Documented applications

    Impala / Full-Size
    • 1969- Factory-verified

      4 barrel

      GM Heritage factory kit — 1969 Chevrolet, p.8.
    • 1969 Factory-verified
      GM Heritage factory kit — 1969 Chevrolet, p.8.

    This page aggregates every documented appearance of LS1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.