Engine, diesel, 5.7L V8

Years 1983–85 Models 3 Factory citations 7

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Also documented for Buick Cadillac Chevrolet GMC Oldsmobile

Documented applications

Bonneville — G-body (1982–1986)

1983–1984 Single-source

optional; Amsoil's 1983 and 1984 Bonneville lists give the 5.7L diesel V8 (VIN engine code N), Wikipedia gives the Oldsmobile 350 diesel and Curbside Classic names an optional diesel for 1984; none prints the code; shared G-body code; cited from the Chevrolet Monte Carlo kit

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

Grand Prix — G-body (1983–1987)

1983–1984 Factory-verified

Wikipedia's infobox gives LF9 for the Oldsmobile 350 diesel V8; its 1984 section names the diesel among the engines that continued from 1983, and its 1985 section says it was dropped; shared G-body code; cited from the Chevrolet Monte Carlo kit

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

Parisienne — B-body (1983–1989)

1983–1985 Factory-verified

350 cu in; Wikipedia's Oldsmobile diesel article lists the LF9 for the Parisienne through 1985; 1984 rests on the kit's heavy-duty battery remark (with LF9 diesel); shared B-body code; cited from the Chevrolet Caprice kit

GM Heritage factory kit — 1983 Chevrolet Caprice, p.13.
GM Heritage factory kit — 1984 Chevrolet Caprice, p.40.
GM Heritage factory kit — 1985 Chevrolet Caprice, p.18.

This page aggregates every documented appearance of LF9 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.