| Year of manufacture | 1934–39 |
| Units built | 685 |
| Engine | 8-cylinder in-line engine, 2 valve/
cylinder, 2 overhead camshafts |
| Cubic capacity/bore [cm³/mm] | 3257/72 x 100 |
| Compressor | yes, at T57C and 57SC |
| Carburetor | Stromberg |
| Power [HP at revolutions/min] | 135 at 5000 (T57S) |
| Forward gears | 4 |
