1951 Alvis TB 21 vs. 1981 Morgan 4
To start off, 1981 Morgan 4 is newer by 30 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, 1981 Morgan 4 (96 HP @ 6000 RPM) has 5 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1981 Morgan 4 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 72 more torque (in Nm) than 1981 Morgan 4. (132 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1981 Morgan 4.
Compare all specifications:
| 1951 Alvis TB 21 | 1981 Morgan 4 | |
| Make | Alvis | Morgan |
| Model | TB 21 | 4 |
| Year Released | 1951 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1596 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 96 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 204 Nm | 132 Nm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Length | 4430 mm | 3670 mm |
| Vehicle Width | 1680 mm | 1430 mm |
| Wheelbase Size | 2750 mm | 2450 mm |
