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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 various vehicles. 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.
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 |
| Horsepower (hp / kW @ rpm): | 335 / 250 @ 5600 (GM estimated) |
| Torque (lb-ft / Nm @ rpm): | 400 / 542 @ 2400-4400 (GM estimated) |
| Recommended fuel: | premium required |
| Maximum engine speed (rpm): | TBD |
| CT6 estimated fuel economy (city / hwy): | TBD |
| Assembly: | GM Romulus Powertrain, Michigan (expected) |
Vehicle Applications
| Model Year | Vehicle | Engine | Transmission | Power (hp / kW @ rpm) | Torque (lb-ft / Nm @ rpm) |
|---|---|---|---|---|---|
| 2020-present | Cadillac CT5 550T | 3.0L Twin Turbo V-6 TBD | Hydra-Matic 10LXX | 335 / 250 @ 5600 | 400 / 542 @ 2400-4400 |
Assembly
The GM Twin-Turbo 3.0L V6 LGY engine is made at the GM Romulus Powertrain plant near Detroit, Michigan.
