1966 Holden HD vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 37 year(s). Which means there will be less support and parts availability for 1966 Holden HD. In addition, the cost of maintenance, including insurance, on 1966 Holden HD would be higher. At 3,175 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (209 HP @ 6200 RPM) has 87 more horse power than 1966 Holden HD. (122 HP @ 4600 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 1966 Holden HD. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 345 kg more than 1966 Holden HD. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1966 Holden HD 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 1966 Holden HD. However, in wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Opel Signum (300 Nm @ 4000 RPM) has 63 more torque (in Nm) than 1966 Holden HD. (237 Nm @ 2200 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1966 Holden HD.
Compare all specifications:
| 1966 Holden HD | 2003 Opel Signum | |
| Make | Holden | Opel |
| Model | HD | Signum |
| Year Released | 1966 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2930 cc | 3175 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 122 HP | 209 HP |
| Engine RPM | 4600 RPM | 6200 RPM |
| Torque | 237 Nm | 300 Nm |
| Torque RPM | 2200 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Vehicle Weight | 1200 kg | 1545 kg |
| Vehicle Length | 4580 mm | 4640 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1510 mm | 1470 mm |
| Wheelbase Size | 2700 mm | 2840 mm |
