See other engines in this family
Toyota 3GR-FE specs: 3.0L (182.9 ci) 6-cylinder, 87.5 x 82 mm (3.4449 x 3.2283 in) bore and stroke, 10.5:1 compression. Rated 228 hp. DOHC.
The Toyota 3GR-FE is oversquare — the 3.4449" bore exceeds the 3.2283" stroke by 6.7% — a layout that favors airflow and RPM over leverage at the crank. The 3.2283" stroke does not reach 4,000 ft/min of mean piston speed until about 7,450 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 30.5 ci (500 cc).
10.5:1 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.
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 Toyota Crown, Lexus GS 300 (non-US), Lexus IS 300 (non-US).
| Displacement | 182.9 ci / 3 L |
|---|---|
| Bore | 3.4449" |
| Stroke | 3.2283" |
| Cylinders | 6 |
| Compression ratio | 10.5:1 |
| Bore/stroke ratio | 1.067 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 228 hp |
| Bore/stroke character | 1.067 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,228 ft/min — conservative for a street engine |
| Displacement per cylinder | 30.5 ci |
| Static compression | 10.5:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.