GM 3.0 Liter Twin Turbo V6 LGY Engine
The 3.0 liter V6 engine (production code LGY) is a six-cylinder engine produced by General Motors for use in luxury automobiles. It is part of GM’s fourth-generation high-feature DOHC V6 engine family and first launched on the 2020 Cadillac CT5. The engine is a variant of the twin-turbo 3.0L V6 LGW engine, but features a smaller turbo.
|Displacement (cu in / cc):||182 / 2990|
|Bore & stroke (in / mm):||3.39 x 3.38 / 86 x 85.8|
|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|
|Recommended fuel:||premium required|
|Maximum engine speed (rpm):||5400|
|Assembly:||GM Romulus Powertrain, Michigan (expected)|
|Model Year||Vehicle||Engine||Transmission||Power (hp / kW @ rpm)||Torque (lb-ft / Nm @ rpm)|
|2020-2023||Cadillac CT5 550T||3.0L Twin Turbo V-6 LGY||Hydra-Matic 10LXX MHS||335 / 250 @ 5400||405 / 550 @ 2350 -4000|
|2020-2023||Cadillac CT5-V||3.0L Twin Turbo V-6 LGY||Hydra-Matic 10LXX MHS||360 / 268 @ 5400||405 / 550 @ 2350-4000|
The GM Twin-Turbo 3.0L V6 LGY engine is made at the GM Romulus Powertrain plant near Detroit, Michigan.
Discuss the turbocharged 3.0-liter LGY six-cylinder engine in one of our GM forums.
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3.0L Twin-Turbo V6 LGY News
The amount of turbo-charged gasoline engines has increased 21 percent over the past five years.
It’s certainly more than the official price of $2,500.