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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.
Specifications
| 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 |
| Compression ratio: | 9.8:1 |
| Recommended fuel: | premium required |
| Maximum engine speed (rpm): | 5400 |
| Assembly: | GM Romulus Powertrain, Michigan (expected) |
Vehicle Applications
| 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 |
Assembly
The GM Twin-Turbo 3.0L V6 LGY engine is made at the GM Romulus Powertrain plant near Detroit, Michigan.
Discussion
Discuss the turbocharged 3.0-liter LGY six-cylinder engine in one of our GM forums.
News
Follow GM Authority’s coverage of GM LGY engine news.
3.0L Twin-Turbo V6 LGY News
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