1951 Alvis TB 21 vs. 1979 Porsche 930
To start off, 1979 Porsche 930 is newer by 28 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 3,299 cc (6 cylinders), 1979 Porsche 930 is equipped with a bigger engine. In terms of performance, 1979 Porsche 930 (296 HP @ 5500 RPM) has 205 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1979 Porsche 930 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1979 Porsche 930 (431 Nm) has 227 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 1979 Porsche 930 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 | 1979 Porsche 930 | |
| Make | Alvis | Porsche |
| Model | TB 21 | 930 |
| Year Released | 1951 | 1979 |
| Engine Position | Front | Rear |
| Engine Size | 2993 cc | 3299 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 296 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 204 Nm | 431 Nm |
| Engine Compression Ratio | 7.1:1 | 7.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Length | 4430 mm | 4300 mm |
| Vehicle Width | 1680 mm | 1780 mm |
| Wheelbase Size | 2750 mm | 2510 mm |
