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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LH7 Confirmed

    Oldsmobile · Regular Production Option

    Engine, 2.8 L (173 cu in) V6, high output, 2-barrel carburetor

    Years 1982–84 Models 2 Factory citations 2
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    Also described as 2.8L high-output V-6, 130 hp

    Also documented for BuickChevroletGMCPontiac

    Documented applications

    Omega — X-body (1983–1984)
    • 1983–1984 Single-source

      Wikipedia's Omega article names LH7 in its infobox and says the high-output V6 was offered on the ES; shared X-body code; cited from the Chevrolet Citation kit, whose engine pages print it with its model year

      GM Heritage factory kit — 1983 Chevrolet Citation, p.10.
      GM Heritage factory kit — 1984 Chevrolet Citation, p.10.

    This page aggregates every documented appearance of LH7 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.