1952 Alvis TB 21 vs. 1985 Porsche 928
To start off, 1985 Porsche 928 is newer by 33 year(s). Which means there will be less support and parts availability for 1952 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1952 Alvis TB 21 would be higher. At 4,664 cc (8 cylinders), 1985 Porsche 928 is equipped with a bigger engine. In terms of performance, 1985 Porsche 928 (310 HP @ 5900 RPM) has 219 more horse power than 1952 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1985 Porsche 928 should accelerate faster than 1952 Alvis TB 21.
Let's talk about torque, 1985 Porsche 928 (400 Nm @ 4500 RPM) has 196 more torque (in Nm) than 1952 Alvis TB 21. (204 Nm @ 2200 RPM). This means 1985 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1952 Alvis TB 21.
Compare all specifications:
| 1952 Alvis TB 21 | 1985 Porsche 928 | |
| Make | Alvis | Porsche |
| Model | TB 21 | 928 |
| Year Released | 1952 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 2992 cc | 4664 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 91 HP | 310 HP |
| Engine RPM | 4000 RPM | 5900 RPM |
| Torque | 204 Nm | 400 Nm |
| Torque RPM | 2200 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 97 mm |
| Engine Stroke Size | 90 mm | 78.9 mm |
| Engine Compression Ratio | 7.1:1 | 10.4:1 |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4430 mm | 4450 mm |
| Vehicle Width | 1680 mm | 1840 mm |
| Wheelbase Size | 2750 mm | 2510 mm |
