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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    L-30 / L-31 Confirmed

    Oldsmobile · Regular Production Option

    LC 455 2-bbl / HC 455 4-bbl (365 hp)

    Years 1970–71 Models 1

    Documented applications

    Full-Size 88 / 98
    • 1970–71 Confirmed

      L31 requires M40 (TH-400)

      Grade note: confirmed [HK: oldsmobile/1970_Oldsmobile_442_Info_Kit.txt p.236]

    This page aggregates every documented appearance of L-30 / L-31 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.