RPOARCHIVE
Loading index…

    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    L31 Factory-verified

    Chevrolet · Regular Production Option

    409ci 400 hp V8 (solid lifter, 1x4-bbl)

    Years 1963–65 Models 1 Factory citations 3

    Also described as 409 CID V8 400hp

    Documented applications

    Impala / Full-Size
    • 1963-65 Factory-verified

      (special high performance-solid lifter cam/1-4bbl) $320.63 for 1963

      GM Heritage factory kit — 1963 Chevrolet, p.9.
    • 1963–1965 Factory-verified
      GM Heritage factory kit — 1963 Chevrolet, p.9.
      GM Heritage factory kit — 1964 Chevrolet, p.5.

    This page aggregates every documented appearance of L31 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.