1975 AC 428 vs. 2006 Porsche 911
To start off, 2006 Porsche 911 is newer by 31 year(s). Which means there will be less support and parts availability for 1975 AC 428. In addition, the cost of maintenance, including insurance, on 1975 AC 428 would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 2006 Porsche 911 (350 HP @ 6600 RPM) has 52 more horse power than 1975 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2006 Porsche 911 should accelerate faster than 1975 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 2006 Porsche 911 weights approximately 130 kg more than 1975 AC 428. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1975 AC 428. In wet, icy, snow, or gravel driving conditions, 2006 Porsche 911 will offer significantly more control. 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, 1975 AC 428 (639 Nm @ 2800 RPM) has 239 more torque (in Nm) than 2006 Porsche 911. (400 Nm @ 4600 RPM). This means 1975 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 2006 Porsche 911. 2006 Porsche 911 has automatic transmission and 1975 AC 428 has manual transmission. 1975 AC 428 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Porsche 911 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1975 AC 428 | 2006 Porsche 911 | |
| Make | AC | Porsche |
| Model | 428 | 911 |
| Year Released | 1975 | 2006 |
| Engine Position | Front | Rear |
| Engine Size | 7003 cc | 3824 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 298 HP | 350 HP |
| Engine RPM | 4600 RPM | 6600 RPM |
| Torque | 639 Nm | 400 Nm |
| Torque RPM | 2800 RPM | 4600 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1430 kg | 1560 kg |
| Vehicle Length | 4430 mm | 4430 mm |
| Vehicle Width | 1710 mm | 1860 mm |
| Vehicle Height | 1310 mm | 1310 mm |
| Wheelbase Size | 2450 mm | 2360 mm |
