Porsche M28.21, M28.22, Engine
| Engine capacity | 4,664 cm³ |
| Maximum power (range), hp | 310 |
| Maximum torque, N*m (kg*m) at rpm. | 400 (41) / 4100 |
| Fuel used | Gasoline AI-98 |
| Fuel consumption, l/100 km | 12.7 |
| Engine type | V-shaped, 8-cylinder |
| Additional engine information | distributed fuel injection |
| Maximum power, hp (kW) at rpm | 310 (228) / 5900 |
| Compression Ratio (Range) | 10.4 |
| Cylinder diameter (range), mm | 97 |
| Piston stroke (range), mm | 78.9 |
| Valve drive | SOHC |
| Number of valves per cylinder (range) | 2 |