| Nissan W64 | |
| Manufacturer: | Prince & Nissan |
| Production: | 1966-1967 |
| Configuration: | 90° V8 |
| Displacement: | 63731NaN1 |
| Bore: | 105mm |
| Stroke: | 92mm |
| Valvetrain: | OHV |
| Fueltype: | Gasoline |
| Oilsystem: | Wet sump |
| Power: | 2600NaN0 |
The W64 is a 6.4L V8 piston engine from Nissan. It was originally developed by the Prince Motor Company for use in the Prince Royal limousine, a limousine made for the Imperial Household of Japan.
Limited production, only 8 known units built.