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Land Rover AJ133 supercharged specs: 5.0L (305 ci) 8-cylinder, 92.5 x 93 mm (3.6417 x 3.6614 in) bore and stroke, 9.5:1 compression. Rated 510-557 hp.
The Land Rover AJ133 supercharged is close to square: 3.6417" bore against 3.6614" stroke, within 0.5%, which splits the difference between a high-revving layout and a torque layout. The 3.6614" stroke puts mean piston speed at 4,000 ft/min around 6,550 RPM, which is where a production bottom end is generally considered at its limit. Each of the 8 cylinders displaces 38.1 ci (625 cc).
9.5:1 is in the range that usually runs on pump premium.
It is one of 2 engines in the Land Rover 305ci family, all of them 305 ci — the differences between them are in compression, heads and rating, not displacement. 27 factory variants share these dimensions, rated from 510 to 557 hp across 2010–2026.
| Displacement | 305 ci / 5 L |
|---|---|
| Bore | 3.6417" |
| Stroke | 3.6614" |
| Cylinders | 8 |
| Configuration | V8 |
| Compression ratio | 9.5:1 |
| Bore/stroke ratio | 0.995 |
| Fuel type | gas |
|---|---|
| Advertised HP | 510–557 hp |
| Years | 2010–2026 |
| Bore/stroke character | 0.995 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,661 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 38.1 ci |
| Static compression | 9.5:1 — 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 |
|---|---|---|
| 2010 | 510 hp | AJ133 supercharged |
| 2011 | 510 hp | AJ133 supercharged |
| 2012 | 510 hp | AJ133 supercharged |
| 2013 | 510 hp | AJ133 supercharged |
| 2014 | 510 hp | AJ133 supercharged |
| 2015 | 510 hp | AJ133 supercharged |
| 2016 | 510 hp | AJ133 supercharged |
| 2016 | 550 hp | AJ133 supercharged |
| 2017 | 510 hp | AJ133 supercharged |
| 2017 | 550 hp | AJ133 supercharged |
| 2018 | 518 hp | AJ133 supercharged |
| 2018 | 557 hp | AJ133 supercharged |
| 2019 | 518 hp | AJ133 supercharged |
| 2019 | 557 hp | AJ133 supercharged |
| 2020 | 518 hp | AJ133 supercharged |
| 2020 | 557 hp | AJ133 supercharged |
| 2021 | 518 hp | AJ133 supercharged |
| 2021 | 557 hp | AJ133 supercharged |
| 2022 | 518 hp | AJ133 supercharged |
| 2022 | 557 hp | AJ133 supercharged |
| 2023 | 518 hp | AJ133 supercharged |
| 2024 | — | AJ133 supercharged |
| 2024 | 518 hp | AJ133 supercharged |
| 2025 | — | AJ133 supercharged |
| 2025 | 518 hp | AJ133 supercharged |
| 2026 | — | AJ133 supercharged |
| 2026 | 518 hp | AJ133 supercharged |
2 factory vehicles, 2010–2026. Each year opens that model's engine table.