RPOARCHIVE
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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LH8 Single-source

    Pontiac · Regular Production Option

    1.8 L L4, SOHC, throttle-body fuel injection (VIN 0)

    Years 1982–86 Models 1
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    Also documented for BuickChevroletGMCHummerOldsmobile

    Documented applications

    J2000 / Sunbird — J-body (1982–1987)
    • 1982–1986 Single-source

      the Brazilian-built overhead-cam four, 84 hp; Wikipedia says it joined the carbureted engine during 1982, at first with the automatic only, and became the standard engine for 1983; Wikipedia's Sunbird Engines list and Family II article give it to the Sunbird 1982–1986; the VIN letter is from the 1987 NICB Pontiac engine table (1983–1986 columns), and the 1983 and 1986 NICB Pontiac engine tables (car_reference/NICB/1983.pdf p.55, 1986.pdf p.76) print the 1.8 L TBI as VIN 0 in their 1982 column; none prints RPO codes

    This page aggregates every documented appearance of LH8 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.