Engine, 2.8 L (173 cu in) V6, high output, 2-barrel carburetor

Years 1983–84 Models 1 Factory citations 2

Also documented for Chevrolet GMC Oldsmobile Pontiac

Documented applications

Skylark — X-body (1983–1985)

1983–1984 Factory-verified

the T-Type's standard engine in Wikipedia's Skylark article; Wikipedia names LH7 in its infobox; gnttype.org's 1984 Buick VIN table prints it for the Skylark (VIN Z), a second source (owner ruling, 2026-11-05: a T3 page that names the code for the nameplate, with Wikipedia dating every year); 1985 is left out of the Years because the Citation kit's 1985 engine page lists the multiport-injected LB6 in its place, although Wikipedia's engine list runs LH7 to 1985 (see gaps); shared X-body code; cited from the Chevrolet Citation kit

GM Heritage factory kit — 1983 Chevrolet Citation, p.10.
GM Heritage factory kit — 1984 Chevrolet Citation, p.10.

This page aggregates every documented appearance of LH7 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.