GM-Cadillac 3.0 Liter Twin Turbo V6 LGW Engine
The 3.0 liter V6 engine (production code LGW) is a six-cylinder engine produced by General Motors for use in a Cadillac premium models. It is part of GM’s fourth-generation high-feature DOHC V6 engine family and first launched on the 2016 Cadillac CT6. The motor has remained exclusive to the CT6 during its lifetime.
|Displacement (cu in / cc):||182 / 2990|
|Bore & stroke (in / mm):||3.39 x 3.37 / 86 x 85.6|
|Block material:||cast aluminum|
|Cylinder head material:||cast aluminum|
|Valvetrain:||DOHC, four valves per cylinder, continuously variable valve timing; Active Fuel Management|
|Fuel delivery:||direct high-pressure fuel injection|
|Horsepower (hp / kW @ rpm):||404 / 301 @ 5700 (SAE certified)|
|Torque (lb-ft / Nm @ rpm):||400 / 542 @ 2500-5100 (SAE certified)|
|Recommended fuel:||premium required|
|Maximum engine speed (rpm):||6500|
|CT6 estimated fuel economy (city / hwy):||18 / 26|
|Assembly:||GM Romulus Powertrain, Michigan|
|Model Year||Vehicle||Engine||Transmission||Power (hp / kW @ rpm)||Torque (lb-ft / Nm @ rpm)|
|2016-2019||Cadillac CT6||3.0L Twin Turbo V-6 LGW||Hydra-Matic 8L90 M5X||404 / 301 @ 5700||400 / 542 @ 2500-5100|
For the 2020 model year, the LGW engine was discontinued in the Cadillac CT6.
The GM Twin-Turbo 3.0L V6 LGW engine is made at the GM Romulus Powertrain plant near Detroit, Michigan. The plant received a $540-million investment to build the 3.0L LGW as well as its naturally-aspirated relative, the 3.6L LGX.