1951 Alvis TA 21 vs. 1975 Porsche 911
To start off, 1975 Porsche 911 is newer by 24 year(s). Which means there will be less support and parts availability for 1951 Alvis TA 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TA 21 would be higher. At 2,994 cc (6 cylinders), 1975 Porsche 911 is equipped with a bigger engine. In terms of performance, 1975 Porsche 911 (260 HP @ 5500 RPM) has 167 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 1975 Porsche 911 should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 1951 Alvis TA 21 weights approximately 253 kg more than 1975 Porsche 911.
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, 1975 Porsche 911 (343 Nm @ 4000 RPM) has 139 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 1975 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TA 21.
Compare all specifications:
| 1951 Alvis TA 21 | 1975 Porsche 911 | |
| Make | Alvis | Porsche |
| Model | TA 21 | 911 |
| Year Released | 1951 | 1975 |
| Engine Position | Front | Rear |
| Engine Size | 2993 cc | 2994 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 93 HP | 260 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 204 Nm | 343 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 95.1 mm |
| Engine Stroke Size | 90 mm | 70.4 mm |
| Engine Compression Ratio | 7.1:1 | 6.5:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1448 kg | 1195 kg |
| Vehicle Length | 4630 mm | 4300 mm |
| Vehicle Width | 1680 mm | 1780 mm |
| Vehicle Height | 1600 mm | 1330 mm |
| Wheelbase Size | 2840 mm | 2270 mm |
| Fuel Tank Capacity | 64 L | 79 L |
