Engine, 3800 3.8L V6, multiport fuel injection

Years 1991–95 Models 3 Factory citations 4

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Also described as Engine, 3.8L V6, Buick 3800

Also documented for Buick Chevrolet Pontiac

Documented applications

Ninety-Eight — C-body, front-drive (1991–1996)

1992–1994 Single-source

the naturally aspirated 3800 Series I, 170 hp; both years from Wikipedia's Buick V6 article, whose L27 application list gives the Ninety-Eight 1992–1994, first and last year alike; 1991 is left out because no source read dates this car's 1991 engine code (the Ninety Eight article says only that the naturally aspirated 3.8L V6 was offered in all years, and its infobox prints the slash form L27/L36); shared C-body code; cited from the Buick Park Avenue, whose Wikipedia article and the V6 article's Park Avenue entry give L27 to that sibling, but both are Wikipedia, so the row stays single-source; the description follows the merged buick/park-avenue-c-body doc

Silhouette — U-body (1990–1996)

1992–1995 Single-source

requires M13; optional (Wikipedia: optional from 1992, replaced for 1996); Wikipedia's Silhouette infobox gives L27 for the generation; the weight pages print the engine's own line (1992 p.42, 1994 p.40, 1995 p.79; the 1993 p.40 line prints it as 127) and the remarks "W/3800 Engine, L27" on the block heater lines; 1995: not on the cargo van, as the kit marks it; shared U-body code; cited from the Chevrolet Lumina APV kit

GM Heritage factory kit — 1992 Chevrolet LuminaAPV, p.42.
GM Heritage factory kit — 1993 Chevrolet LuminaAPV, p.40.
GM Heritage factory kit — 1994 Chevrolet LuminaAPV, p.40.
GM Heritage factory kit — 1995 Chevrolet LuminaAPV, p.79.

Toronado — E-body (1986–1992)

1991–1992 Single-source

Wikipedia's Buick V6 article lists the Toronado and the Troféo under L27 for 1991–1992; the Toronado article says 1991 models had more horsepower but names no code; matched to the car by the engine article's list; description follows the Toronado article; the merged Buick Riviera doc reads this code with different fuel-system wording (Buick Riviera reads it as sequential fuel injection)

This page aggregates every documented appearance of L27 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.