1974 Porsche 911 vs. 1985 TVR 390
To start off, 1985 TVR 390 is newer by 11 year(s). Which means there will be less support and parts availability for 1974 Porsche 911. In addition, the cost of maintenance, including insurance, on 1974 Porsche 911 would be higher. At 3,905 cc (8 cylinders), 1985 TVR 390 is equipped with a bigger engine. In terms of performance, 1985 TVR 390 (275 HP @ 5500 RPM) has 124 more horse power than 1974 Porsche 911. (151 HP @ 5700 RPM) In normal driving conditions, 1985 TVR 390 should accelerate faster than 1974 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 1985 TVR 390 weights approximately 32 kg more than 1974 Porsche 911. 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, 1985 TVR 390 (367 Nm @ 3500 RPM) has 127 more torque (in Nm) than 1974 Porsche 911. (240 Nm @ 3800 RPM). This means 1985 TVR 390 will have an easier job in driving up hills or pulling heavy equipment than 1974 Porsche 911.
Compare all specifications:
| 1974 Porsche 911 | 1985 TVR 390 | |
| Make | Porsche | TVR |
| Model | 911 | 390 |
| Year Released | 1974 | 1985 |
| Body Type | Coupe | Convertible |
| Engine Position | Rear | Front |
| Engine Size | 2687 cc | 3905 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 151 HP | 275 HP |
| Engine RPM | 5700 RPM | 5500 RPM |
| Torque | 240 Nm | 367 Nm |
| Torque RPM | 3800 RPM | 3500 RPM |
| Engine Bore Size | 90 mm | 89.8 mm |
| Engine Stroke Size | 70.4 mm | 77.1 mm |
| Top Speed | 222 km/hour | 232 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1075 kg | 1107 kg |
| Vehicle Length | 4300 mm | 4020 mm |
| Vehicle Width | 1620 mm | 1730 mm |
| Vehicle Height | 1330 mm | 1210 mm |
| Wheelbase Size | 2270 mm | 2390 mm |
| Fuel Tank Capacity | 80 L | 61 L |
