1951 Alvis TB 21 vs. 1963 Triumph Herald
To start off, 1963 Triumph Herald is newer by 12 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, 1951 Alvis TB 21 (91 HP @ 4000 RPM) has 53 more horse power than 1963 Triumph Herald. (38 HP @ 4500 RPM). In normal driving conditions, 1951 Alvis TB 21 should accelerate faster than 1963 Triumph Herald.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 121 more torque (in Nm) than 1963 Triumph Herald. (83 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1963 Triumph Herald.
Compare all specifications:
| 1951 Alvis TB 21 | 1963 Triumph Herald | |
| Make | Alvis | Triumph |
| Model | TB 21 | Herald |
| Year Released | 1951 | 1963 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1147 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 38 HP |
| Engine RPM | 4000 RPM | 4500 RPM |
| Torque | 204 Nm | 83 Nm |
| Engine Bore Size | 84 mm | 69.3 mm |
| Engine Stroke Size | 90 mm | 76 mm |
| Engine Compression Ratio | 7.1:1 | 9.0:1 |
| 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 | 2320 mm |
