1955 Alvis TC 21 vs. 2004 Porsche 911
To start off, 2004 Porsche 911 is newer by 49 year(s). Which means there will be less support and parts availability for 1955 Alvis TC 21. In addition, the cost of maintenance, including insurance, on 1955 Alvis TC 21 would be higher. At 3,600 cc (6 cylinders), 2004 Porsche 911 is equipped with a bigger engine. In terms of performance, 2004 Porsche 911 (377 HP @ 7400 RPM) has 272 more horse power than 1955 Alvis TC 21. (105 HP @ 4000 RPM) In normal driving conditions, 2004 Porsche 911 should accelerate faster than 1955 Alvis TC 21. With that said, vehicle weight also plays an important factor in acceleration. 2004 Porsche 911 weights approximately 5 kg more than 1955 Alvis TC 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2004 Porsche 911 (385 Nm @ 5000 RPM) has 164 more torque (in Nm) than 1955 Alvis TC 21. (221 Nm @ 2500 RPM). This means 2004 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1955 Alvis TC 21.
Compare all specifications:
| 1955 Alvis TC 21 | 2004 Porsche 911 | |
| Make | Alvis | Porsche |
| Model | TC 21 | 911 |
| Year Released | 1955 | 2004 |
| Engine Position | Front | Rear |
| Engine Size | 2993 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 105 HP | 377 HP |
| Engine RPM | 4000 RPM | 7400 RPM |
| Torque | 221 Nm | 385 Nm |
| Torque RPM | 2500 RPM | 5000 RPM |
| Engine Bore Size | 84 mm | 100 mm |
| Engine Stroke Size | 90 mm | 76.4 mm |
| Engine Compression Ratio | 8.0:1 | 11.7:1 |
| Top Speed | 164 km/hour | 306 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1450 kg | 1455 kg |
| Vehicle Length | 4810 mm | 4440 mm |
| Vehicle Width | 1680 mm | 1780 mm |
| Vehicle Height | 1590 mm | 1280 mm |
| Wheelbase Size | 2840 mm | 2360 mm |
