Engine, 2.8L (173 cu in) V6, multiport fuel injection

Years 1985–89 Models 3 Factory citations 5

Query this via API →

Also described as 2.8 L (173 cu in) V6, multi-port fuel injection2.8 L (173 cu in) V6, OHV, multiport fuel injection

Also documented for Buick Cadillac Chevrolet Pontiac

Documented applications

Cutlass Ciera — A-body (1982–1996)

1987–1989 Single-source

Ciera years and code: Wikipedia's Ciera engine tables (1987–1988 and 1989) and its 60° V6 article (1987–1989); the same article also lists a Ciera S for 1990–1992, which the Ciera article does not, so those years are left out; shared A-body code; cited from the Chevrolet Celebrity kits (the 1987 kit page prints the code garbled, so 1987 rests on Wikipedia)

GM Heritage factory kit — 1988 Chevrolet Celebrity, p.46.
GM Heritage factory kit — 1989 Chevrolet Celebrity, p.10.

Cutlass Supreme — W-body (1988–1997)

1988–1989 Single-source

130 hp; Wikipedia's Cutlass Supreme engine table prints LB6 for 1988–1989, and its 60° V6 article lists the car under LB6 for 1988–1989 (not independent); the W-Body Page dates the 2.8L 1988–1989 but prints no engine code; no listed Lumina or Monte Carlo kit page prints it

Firenza — J-body (1982–1988)

1985–1987 Single-source

an option with the GT package from 1985 (Wikipedia); Wikipedia's Firenza article (infobox, text and Engines list) gives it 1985–1987 and says the V6 was dropped for 1988, so 1988 is left out although the 1988 Cavalier kit prints LB6; shared J-body code; cited from the Chevrolet Cavalier kit, whose optional equipment weight pages list it in each year (a V6 optional or standard on some Cavalier lines)

GM Heritage factory kit — 1985 Chevrolet Cavalier, p.35.
GM Heritage factory kit — 1986 Chevrolet Cavalier, p.37.
GM Heritage factory kit — 1987 Chevrolet Cavalier, p.37.

This page aggregates every documented appearance of LB6 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.