Engine, 5.0L V8, 4 barrel, 307 cu in

Years 1983–90 Models 5 Factory citations 3

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Also described as Engine, 5.0L V8, 307 cu in, 4 barrel

Also documented for Cadillac Chevrolet Oldsmobile Pontiac

Documented applications

Electra — C-body, rear-drive (1983–1984)

1983–1984 Single-source

the Oldsmobile 307 V8, VIN code Y; Wikipedia's Oldsmobile V8 article lists the LV2 for the Electra through 1984; 1983 also matches one 1983 Electra Park Avenue coupe listed on AutoHunter with the LV2, a single dealer-type listing (T4) that is not counted as a second source; 1984 also from gnttype.org's 1984 Buick VIN table, which prints it in the Electra Limited and Park Avenue block (its 1983 block is word for word the 1984 one, so it is not counted for 1983)

Estate Wagon — B-body (1983–1990)

1983–1990 Single-source

Oldsmobile 307 V8, the standard engine; Wikipedia's Oldsmobile V8 article lists the LV2 (VIN code Y) for the Buick Estate Wagon through 1990, and its Buick Estate article names the 307 as the standard engine; gnttype.org's 1984 to 1987 Buick VIN tables print it in the B-body block that includes the Estate wagon, a second source; 1983 and 1989 from Wikipedia alone, so the row stays single-source; shared B-body code; cited from the Chevrolet Caprice kit (1987, 1988, 1990), where it is the Caprice wagon's engine

GM Heritage factory kit — 1987 Chevrolet Caprice, p.18.
GM Heritage factory kit — 1988 Chevrolet Caprice, p.14.
GM Heritage factory kit — 1990 Chevrolet Caprice, p.15.

LeSabre — B-body (1983–1985)

1983–1985 Single-source

the Oldsmobile 307 V8 (VIN code Y), optional on the coupe and sedan; Wikipedia's Oldsmobile V8 article prints LV2 for the LeSabre through 1985 and its LeSabre article names the 307 in each of these years; gnttype.org's 1984 and 1985 Buick VIN tables print it for the LeSabre (its 1983 table repeats the 1984 table word for word, so 1983 rests on Wikipedia alone); the Caprice kits of these years show the Chevrolet 305 (LG4) instead, so no factory page prints the code

Regal — G-body (1983–1987)

1986–1987 Confirmed

gnttype.org's 1986 and 1987 VIN tables and its 1987 option sheet (not with WE2; requires C60 with YF5); Wikipedia gives the Regal the Oldsmobile 307 V8 for 1986–1987; 1985 is left out: gnttype.org's 1985 VIN table lists it under the Regal, but Wikipedia starts it in 1986

Riviera — E-body (1983–1985)

1983–1985 Confirmed

the Oldsmobile 307 V8 (VIN code Y); Wikipedia's Oldsmobile V8 engine article prints LV2 and lists the Riviera for 1980–1985; gnttype.org's 1984 Buick VIN table prints it for the Riviera convertible, a second source (owner ruling, 2026-11-05: a T3 page that names the code for the nameplate, with Wikipedia dating every year); its 1983 table repeats the 1984 one and its 1985 Riviera block repeats the 1986 one, so neither adds a year

This page aggregates every documented appearance of LV2 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.