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Toyota 2UZ-FE specs: 4.7L (284.6 ci) 8-cylinder, 94 x 84 mm (3.7008 x 3.3071 in) bore and stroke, 10:1 compression. Rated 271 hp. Rod ratio and piston speed.
The Toyota 2UZ-FE is oversquare — the 3.7008" bore exceeds the 3.3071" stroke by 11.9% — a layout that favors airflow and RPM over leverage at the crank. The 3.3071" 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 8 cylinders displaces 35.6 ci (583 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.
It is one of 7 engines in the UZ V8 family, the largest at 284.6 ci. Factory fitments include the Toyota Tundra, Toyota Sequoia, Toyota Land Cruiser and 2 others.
| Displacement | 284.6 ci / 4.7 L |
|---|---|
| Bore | 3.7008" |
| Stroke | 3.3071" |
| Cylinders | 8 |
| Compression ratio | 10:1 |
| Bore/stroke ratio | 1.119 |
| Block material | cast iron |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 271 hp |
| Bore/stroke character | 1.119 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,307 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.6 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
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