1970 AC 428 vs. 1971 Porsche 917
To start off, 1971 Porsche 917 is newer by 1 year(s). Which means there will be less support and parts availability for 1970 AC 428. In addition, the cost of maintenance, including insurance, on 1970 AC 428 would be higher. At 7,003 cc (8 cylinders), 1970 AC 428 is equipped with a bigger engine. In terms of performance, 1971 Porsche 917 (520 HP) has 222 more horse power than 1970 AC 428. (298 HP) In normal driving conditions, 1971 Porsche 917 should accelerate faster than 1970 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 1970 AC 428 weights approximately 632 kg more than 1971 Porsche 917.
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, 1970 AC 428 (640 Nm) has 30 more torque (in Nm) than 1971 Porsche 917. (610 Nm). This means 1970 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1971 Porsche 917.
Compare all specifications:
| 1970 AC 428 | 1971 Porsche 917 | |
| Make | AC | Porsche |
| Model | 428 | 917 |
| Year Released | 1970 | 1971 |
| Engine Position | Front | Middle |
| Engine Size | 7003 cc | 4994 cc |
| Horse Power | 298 HP | 520 HP |
| Torque | 640 Nm | 610 Nm |
| Drive Type | Rear | Rear |
| Vehicle Weight | 1430 kg | 798 kg |
