1970 AC 428 vs. 1999 Opel Signum
To start off, 1999 Opel Signum is newer by 29 year(s). Which means there will be less support and parts availability for 1970 AC 428. In addition, the cost of maintenance, including insurance, on 1970 AC 428 would be higher. At 7,003 cc (8 cylinders), 1970 AC 428 is equipped with a bigger engine. In terms of performance, 1970 AC 428 (298 HP @ 4600 RPM) has 175 more horse power than 1999 Opel Signum. (123 HP @ 3250 RPM). In normal driving conditions, 1970 AC 428 should accelerate faster than 1999 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Signum weights approximately 180 kg more than 1970 AC 428.
Because 1970 AC 428 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1970 AC 428. However, in wet, icy, snow, or gravel driving conditions, 1999 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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, 1970 AC 428 (640 Nm @ 2800 RPM) has 369 more torque (in Nm) than 1999 Opel Signum. (271 Nm @ 1500 RPM). This means 1970 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Signum.
Compare all specifications:
| 1970 AC 428 | 1999 Opel Signum | |
| Make | AC | Opel |
| Model | 428 | Signum |
| Year Released | 1970 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 2171 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 123 HP |
| Engine RPM | 4600 RPM | 3250 RPM |
| Torque | 640 Nm | 271 Nm |
| Torque RPM | 2800 RPM | 1500 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1430 kg | 1610 kg |
| Vehicle Length | 4430 mm | 4640 mm |
| Vehicle Width | 1710 mm | 1800 mm |
| Vehicle Height | 1310 mm | 1470 mm |
| Wheelbase Size | 2450 mm | 2840 mm |
