1973 AC 428 vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 32 year(s). Which means there will be less support and parts availability for 1973 AC 428. In addition, the cost of maintenance, including insurance, on 1973 AC 428 would be higher. At 7,002 cc (8 cylinders), 1973 AC 428 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (445 HP @ 6000 RPM) has 147 more horse power than 1973 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1973 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 160 kg more than 1973 AC 428. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1973 AC 428 (639 Nm) has 19 more torque (in Nm) than 2005 Porsche 911. (620 Nm). This means 1973 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 1973 AC 428 | 2005 Porsche 911 | |
| Make | AC | Porsche |
| Model | 428 | 911 |
| Year Released | 1973 | 2005 |
| Engine Position | Front | Rear |
| Engine Size | 7002 cc | 3605 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 298 HP | 445 HP |
| Engine RPM | 4600 RPM | 6000 RPM |
| Torque | 639 Nm | 620 Nm |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1430 kg | 1590 kg |
| Vehicle Length | 4430 mm | 4440 mm |
| Vehicle Width | 1710 mm | 1840 mm |
| Vehicle Height | 1310 mm | 1300 mm |
| Wheelbase Size | 2450 mm | 2360 mm |
