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Toyota 1GR-FE specs: 4.0L (241.4 ci) 6-cylinder, 94 x 95 mm (3.7008 x 3.7402 in) bore and stroke. Rated 236-270 hp, 2003–2024. Used in the Toyota 4Runner.
The Toyota 1GR-FE is close to square: 3.7008" bore against 3.7402" stroke, within 1.1%, which splits the difference between a high-revving layout and a torque layout. The 3.7402" stroke puts mean piston speed at 4,000 ft/min around 6,400 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 40.2 ci (659 cc).
It is one of 11 engines in the GR V6 family, the largest at 241.4 ci. 28 factory variants share these dimensions, rated from 236 to 270 hp across 2003–2024.
| Displacement | 241.4 ci / 4 L |
|---|---|
| Bore | 3.7008" |
| Stroke | 3.7402" |
| Cylinders | 6 |
| Configuration | V6 |
| Bore/stroke ratio | 0.989 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 236–270 hp |
| Years | 2003–2024 |
| Bore/stroke character | 0.989 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,740 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 40.2 ci |
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 |
|---|---|---|
| 2003 | 245 hp | 1GR-FE |
| 2004 | 245 hp | 1GR-FE |
| 2005 | 245 hp | 1GR-FE |
| 2006 | 236 hp | 1GR-FE |
| 2007 | 236 hp | 1GR-FE |
| 2008 | 236 hp | 1GR-FE |
| 2009 | 236 hp | 1GR-FE |
| 2010 | 236 hp | 1GR-FE |
| 2010 | 270 hp | 1GR-FE |
| 2011 | 236 hp | 1GR-FE |
| 2011 | 270 hp | 1GR-FE |
| 2012 | 236 hp | 1GR-FE |
| 2012 | 270 hp | 1GR-FE |
| 2013 | 236 hp | 1GR-FE |
| 2013 | 270 hp | 1GR-FE |
| 2014 | 236 hp | 1GR-FE |
| 2014 | 270 hp | 1GR-FE |
| 2015 | 236 hp | 1GR-FE |
| 2015 | 270 hp | 1GR-FE |
| 2016 | 270 hp | 1GR-FE |
| 2017 | 270 hp | 1GR-FE |
| 2018 | 270 hp | 1GR-FE |
| 2019 | 270 hp | 1GR-FE |
| 2020 | 270 hp | 1GR-FE |
| 2021 | 270 hp | 1GR-FE |
| 2022 | 270 hp | 1GR-FE |
| 2023 | 270 hp | 1GR-FE |
| 2024 | 270 hp | 1GR-FE |