1973 AC 428 vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 36 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, 2009 Porsche 911 (317 HP @ 4250 RPM) has 19 more horse power than 1973 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 1973 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 2009 Porsche 911 weights approximately 20 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.
Because 2009 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1973 AC 428. In wet, icy, snow, or gravel driving conditions, 2009 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, 1973 AC 428 (639 Nm @ 2800 RPM) has 269 more torque (in Nm) than 2009 Porsche 911. (370 Nm @ 4250 RPM). This means 1973 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 2009 Porsche 911. 2009 Porsche 911 has automatic transmission and 1973 AC 428 has manual transmission. 1973 AC 428 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Porsche 911 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1973 AC 428 | 2009 Porsche 911 | |
| Make | AC | Porsche |
| Model | 428 | 911 |
| Year Released | 1973 | 2009 |
| Engine Position | Front | Rear |
| Engine Size | 7002 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 298 HP | 317 HP |
| Engine RPM | 4600 RPM | 4250 RPM |
| Torque | 639 Nm | 370 Nm |
| Torque RPM | 2800 RPM | 4250 RPM |
| Fuel Type | Gasoline | Gasoline |
| 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 | 1450 kg |
| Vehicle Length | 4430 mm | 4440 mm |
| Vehicle Width | 1710 mm | 1780 mm |
| Vehicle Height | 1310 mm | 1310 mm |
| Wheelbase Size | 2450 mm | 2360 mm |
