1951 Alvis TB 21 vs. 1967 Mercury Montclair
To start off, 1967 Mercury Montclair is newer by 16 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 6,722 cc (8 cylinders), 1967 Mercury Montclair is equipped with a bigger engine. In terms of performance, 1967 Mercury Montclair (325 HP @ 4600 RPM) has 234 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1967 Mercury Montclair should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1967 Mercury Montclair (602 Nm) has 398 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 1967 Mercury Montclair will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TB 21.
Compare all specifications:
| 1951 Alvis TB 21 | 1967 Mercury Montclair | |
| Make | Alvis | Mercury |
| Model | TB 21 | Montclair |
| Year Released | 1951 | 1967 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 6722 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 325 HP |
| Engine RPM | 4000 RPM | 4600 RPM |
| Torque | 204 Nm | 602 Nm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Length | 4430 mm | 5560 mm |
| Vehicle Width | 1680 mm | 1990 mm |
| Wheelbase Size | 2750 mm | 3130 mm |
