1951 Alvis TB 21 vs. 1966 Triumph Vitesse
To start off, 1966 Triumph Vitesse is newer by 15 year(s). Which means there will be less support and parts availability for 1951 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TB 21 would be higher. At 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1966 Triumph Vitesse (94 HP @ 5000 RPM) has 3 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1966 Triumph Vitesse should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 46 more torque (in Nm) than 1966 Triumph Vitesse. (158 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1966 Triumph Vitesse.
Compare all specifications:
| 1951 Alvis TB 21 | 1966 Triumph Vitesse | |
| Make | Alvis | Triumph |
| Model | TB 21 | Vitesse |
| Year Released | 1951 | 1966 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 94 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 204 Nm | 158 Nm |
| Engine Bore Size | 84 mm | 74.7 mm |
| Engine Stroke Size | 90 mm | 76 mm |
| Engine Compression Ratio | 7.1:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 3890 mm |
| Vehicle Width | 1680 mm | 1530 mm |
| Wheelbase Size | 2750 mm | 2270 mm |
