1973 AC 428 vs. 1971 Opel Kadett
To start off, 1973 AC 428 is newer by 2 year(s). Which means there will be less support and parts availability for 1971 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1971 Opel Kadett would be higher. At 7,002 cc (8 cylinders), 1973 AC 428 is equipped with a bigger engine. In terms of performance, 1973 AC 428 (298 HP @ 4600 RPM) has 239 more horse power than 1971 Opel Kadett. (59 HP @ 5400 RPM). In normal driving conditions, 1973 AC 428 should accelerate faster than 1971 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1973 AC 428 weights approximately 670 kg more than 1971 Opel Kadett. 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, 1973 AC 428 (639 Nm @ 2800 RPM) has 551 more torque (in Nm) than 1971 Opel Kadett. (88 Nm @ 3400 RPM). This means 1973 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1971 Opel Kadett.
Compare all specifications:
| 1973 AC 428 | 1971 Opel Kadett | |
| Make | AC | Opel |
| Model | 428 | Kadett |
| Year Released | 1973 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 7002 cc | 1196 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 59 HP |
| Engine RPM | 4600 RPM | 5400 RPM |
| Torque | 639 Nm | 88 Nm |
| Torque RPM | 2800 RPM | 3400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1430 kg | 760 kg |
| Vehicle Length | 4430 mm | 4190 mm |
| Vehicle Width | 1710 mm | 1590 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2450 mm | 2430 mm |
