See other engines in this family
Kia Lambda II G6DP specs: 3.3L (201.4 ci) 6-cylinder, 92 x 83.8 mm (3.6220 x 3.2992 in) bore and stroke, 10:1 compression. Rated 365-368 hp, 2018–2023.
The Kia Lambda II G6DP is oversquare — the 3.622" bore exceeds the 3.2992" stroke by 9.8% — a layout that favors airflow and RPM over leverage at the crank. The 3.2992" stroke does not reach 4,000 ft/min of mean piston speed until about 7,250 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 33.6 ci (550 cc).
10:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
6 factory variants share these dimensions, rated from 365 to 368 hp across 2018–2023.
| Displacement | 201.4 ci / 3.3 L |
|---|---|
| Bore | 3.622" |
| Stroke | 3.2992" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10:1 |
| Bore/stroke ratio | 1.098 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 365–368 hp |
| Years | 2018–2023 |
| Bore/stroke character | 1.098 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,299 ft/min — conservative for a street engine |
| Displacement per cylinder | 33.6 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2018 | 365 hp | Lambda II G6DP |
| 2019 | 365 hp | Lambda II G6DP |
| 2020 | 365 hp | Lambda II G6DP |
| 2021 | 365 hp | Lambda II G6DP |
| 2022 | 368 hp | Lambda II G6DP |
| 2023 | 368 hp | Lambda II G6DP |
1 factory vehicle, 2018–2023. Each year opens that model's engine table.