1971 AC 428 vs. 2005 TVR Speed 12
To start off, 2005 TVR Speed 12 is newer by 34 year(s). Which means there will be less support and parts availability for 1971 AC 428. In addition, the cost of maintenance, including insurance, on 1971 AC 428 would be higher. At 7,730 cc (12 cylinders), 2005 TVR Speed 12 is equipped with a bigger engine. In terms of performance, 2005 TVR Speed 12 (790 HP @ 7750 RPM) has 492 more horse power than 1971 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2005 TVR Speed 12 should accelerate faster than 1971 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 1971 AC 428 weights approximately 430 kg more than 2005 TVR Speed 12.
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, 2005 TVR Speed 12 (881 Nm @ 5750 RPM) has 242 more torque (in Nm) than 1971 AC 428. (639 Nm @ 2800 RPM). This means 2005 TVR Speed 12 will have an easier job in driving up hills or pulling heavy equipment than 1971 AC 428.
Compare all specifications:
| 1971 AC 428 | 2005 TVR Speed 12 | |
| Make | AC | TVR |
| Model | 428 | Speed 12 |
| Year Released | 1971 | 2005 |
| Engine Position | Front | Middle |
| Engine Size | 7003 cc | 7730 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 790 HP |
| Engine RPM | 4600 RPM | 7750 RPM |
| Torque | 639 Nm | 881 Nm |
| Torque RPM | 2800 RPM | 5750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1430 kg | 1000 kg |
| Vehicle Length | 4430 mm | 4310 mm |
| Vehicle Width | 1710 mm | 1970 mm |
| Vehicle Height | 1310 mm | 1110 mm |
| Wheelbase Size | 2450 mm | 2570 mm |
