1974 AC 428 vs. 1990 Porsche 911
To start off, 1990 Porsche 911 is newer by 16 year(s). Which means there will be less support and parts availability for 1974 AC 428. In addition, the cost of maintenance, including insurance, on 1974 AC 428 would be higher. At 7,003 cc (8 cylinders), 1974 AC 428 is equipped with a bigger engine. In terms of performance, 1990 Porsche 911 (316 HP @ 5750 RPM) has 18 more horse power than 1974 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 1990 Porsche 911 should accelerate faster than 1974 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 1990 Porsche 911 weights approximately 37 kg more than 1974 AC 428. 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, 1974 AC 428 (639 Nm @ 2800 RPM) has 189 more torque (in Nm) than 1990 Porsche 911. (450 Nm @ 4500 RPM). This means 1974 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1990 Porsche 911.
Compare all specifications:
| 1974 AC 428 | 1990 Porsche 911 | |
| Make | AC | Porsche |
| Model | 428 | 911 |
| Year Released | 1974 | 1990 |
| Engine Position | Front | Rear |
| Engine Size | 7003 cc | 3299 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 298 HP | 316 HP |
| Engine RPM | 4600 RPM | 5750 RPM |
| Torque | 639 Nm | 450 Nm |
| Torque RPM | 2800 RPM | 4500 RPM |
| 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 | 1467 kg |
| Vehicle Length | 4430 mm | 4260 mm |
| Vehicle Width | 1710 mm | 1760 mm |
| Vehicle Height | 1310 mm | 1310 mm |
| Wheelbase Size | 2450 mm | 2270 mm |
