Engine, 3.8L V6, 231 cu in, 2 barrel

Years 1980–87 Models 3 Factory citations 6

Query this via API →

Also described as 231 Buick V6

Also documented for Buick Chevrolet GMC Pontiac

Documented applications

Full-Size 88 / 98

1980–82 Single-source

Base 88

Cutlass Supreme — G-body (1983–1988)

1983–1987 Single-source

the standard engine; Wikipedia's Buick V6 article lists the Cutlass Supreme through 1987 under its general 231 section, not under a separate LD5 heading and its Cutlass Supreme article drops the 3.8L V6 in 1988; eightiescars.com prints LD5 for the 1985 coupe; shared G-body code, cited from the Chevrolet Monte Carlo kit, whose pages print it only as a California emission engine (1983–1984)

GM Heritage factory kit — 1983 Chevrolet Monte Carlo, p.30.
GM Heritage factory kit — 1984 Chevrolet Monte Carlo, p.36.

Delta 88 — B-body (1983–1985)

1983–1985 Factory-verified

shared B-body powertrain code, cited from the Chevrolet Caprice kits, which print LD5 as the 231 cu in 3.8L V6; Wikipedia's Eighty-Eight article names the 231 V6 as the standard engine for 1983; for 1984 and 1985 no Delta 88 source names the engine except the article's generation infobox, which lists the 231 V6 for 1977–1985 under the code LD7, a code Wikipedia's Buick V6 article dates to 1977 only

GM Heritage factory kit — 1983 Chevrolet Caprice, p.15.
GM Heritage factory kit — 1984 Chevrolet Caprice, p.6.
GM Heritage factory kit — 1984 Chevrolet Caprice, p.38.
GM Heritage factory kit — 1985 Chevrolet Caprice, p.40.

This page aggregates every documented appearance of LD5 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.