Alfa Romeo AR 01678, Engine
| Engine capacity | 1,779 cm³ |
| Maximum power (range), hp | 122 |
| Maximum torque, N*m (kg*m) at rpm. | 166 (17) / 4000 |
| Fuel used | Petrol |
| Engine type | In-line, 4-cylinder |
| Additional engine information | 2 carburetors |
| Maximum power, hp (kW) at rpm | 122 (90) / 5300 |
| Cylinder diameter (range), mm | 80 |
| Piston stroke (range), mm | 88.5 |
| Number of valves per cylinder (range) | 2 |