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Toyota 2GR-FSE specs: 3.5L (210.9 ci) 6-cylinder, 94 x 83 mm (3.7008 x 3.2677 in) bore and stroke, 11.8:1 compression. Rated 306 hp. DOHC.
The Toyota 2GR-FSE is oversquare — the 3.7008" bore exceeds the 3.2677" stroke by 13.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.2677" stroke does not reach 4,000 ft/min of mean piston speed until about 7,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 35.2 ci (576 cc).
11.8:1 on aluminum heads is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.
It is one of 11 engines in the GR V6 family, sitting between the 152.5 ci and 241.4 ci members. Factory fitments include the Lexus IS 350, Lexus GS 350, Lexus RC 350 and 1 other.
| Displacement | 210.9 ci / 3.5 L |
|---|---|
| Bore | 3.7008" |
| Stroke | 3.2677" |
| Cylinders | 6 |
| Compression ratio | 11.8:1 |
| Bore/stroke ratio | 1.133 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 306 hp |
| Bore/stroke character | 1.133 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,268 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.1 ci |
| Static compression | 11.8:1 — high enough that pump premium or better is normally required |
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