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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LB4 Single-source

    Oldsmobile · Regular Production Option

    Engine, 4.3L V6, electronic fuel injection

    Years 1991 Models 1
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    Also documented for ChevroletGMCPontiac

    Documented applications

    Bravada — GMT330 (1991–1994)
    • 1991 Single-source

      Wikipedia's Bravada engine list names the LB4 for 1991 (160 hp, throttle body injection); shared GMT330 code, the Chevrolet S-10 Blazer kit's EFI wording is used for the description; single-source because no other source dates it for the Bravada

    This page aggregates every documented appearance of LB4 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.