Engine, gas, 6 cylinder, 4.2L, multiport fuel injection, DOHC, L6, aluminum, GM

Years 1987–88, 2002–04 Models 2 Factory citations 4

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Also described as 2.0 L (121 cu in) L4, OHV, throttle-body fuel injection

Also documented for Buick Chevrolet GMC

Documented applications

Bravada — GMT360 (2002–2004)

2002–2004 Factory-verified

GM factory document — 2002 oldsmobile bravada rpo code list, p.1.
GM factory document — 2003 oldsmobile bravada rpo code list, p.1.
GM factory document — 2004 oldsmobile bravada rpo code list, p.1.

Firenza — J-body (1982–1988)

1987–1988 Single-source

replaced the LQ5; Wikipedia's Firenza article (infobox, Engines list and the 1988 text, which leaves only the OHV four) and its 122 engine article give it 1987–1988; shared J-body code; the 1988 Chevrolet Cavalier kit prints LL8 on a single-condition air conditioning line, a sibling page dated 1988

GM Heritage factory kit — 1988 Chevrolet Cavalier, p.42.

This page aggregates every documented appearance of LL8 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.