1951 Alvis TB 21 vs. 1978 Holden Sunbird
To start off, 1978 Holden Sunbird is newer by 27 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, 1978 Holden Sunbird (96 HP @ 5200 RPM) has 5 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1978 Holden Sunbird should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 47 more torque (in Nm) than 1978 Holden Sunbird. (157 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1978 Holden Sunbird.
Compare all specifications:
| 1951 Alvis TB 21 | 1978 Holden Sunbird | |
| Make | Alvis | Holden |
| Model | TB 21 | Sunbird |
| Year Released | 1951 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1897 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 91 HP | 96 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 204 Nm | 157 Nm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Length | 4430 mm | 4500 mm |
| Vehicle Width | 1680 mm | 1710 mm |
| Wheelbase Size | 2750 mm | 2590 mm |
