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Infiniti Vqr35ddh specs: 3.5L (213.6 ci) 6-cylinder, 95.5 x 81.4 mm (3.7598 x 3.2047 in) bore and stroke, 11:1 compression. Rated 295 hp. DOHC.
The Infiniti Vqr35ddh is oversquare — the 3.7598" bore exceeds the 3.2047" stroke by 17.3% — a layout that favors airflow and RPM over leverage at the crank. The 3.2047" stroke does not reach 4,000 ft/min of mean piston speed until about 7,500 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 35.6 ci (583 cc).
11:1 on aluminum heads is high enough that pump premium or better is normally required.
Factory fitments include the Infiniti QX60.
| Displacement | 213.6 ci / 3.5 L |
|---|---|
| Bore | 3.7598" |
| Stroke | 3.2047" |
| Cylinders | 6 |
| Compression ratio | 11:1 |
| Bore/stroke ratio | 1.173 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 295 hp |
| Bore/stroke character | 1.173 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,205 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.6 ci |
| Static compression | 11:1 — high enough that pump premium or better is normally required |
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