1991 Alfa Romeo SZ vs. 1966 Holden HD
To start off, 1991 Alfa Romeo SZ is newer by 25 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 2,959 cc (6 cylinders), 1991 Alfa Romeo SZ is equipped with a bigger engine. In terms of performance, 1991 Alfa Romeo SZ (208 HP @ 6200 RPM) has 86 more horse power than 1966 Holden HD. (122 HP @ 4600 RPM). In normal driving conditions, 1991 Alfa Romeo SZ should accelerate faster than 1966 Holden HD. With that said, vehicle weight also plays an important factor in acceleration. 1991 Alfa Romeo SZ weights approximately 60 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.
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, 1991 Alfa Romeo SZ (245 Nm @ 4500 RPM) has 8 more torque (in Nm) than 1966 Holden HD. (237 Nm @ 2200 RPM). This means 1991 Alfa Romeo SZ will have an easier job in driving up hills or pulling heavy equipment than 1966 Holden HD.
Compare all specifications:
| 1991 Alfa Romeo SZ | 1966 Holden HD | |
| Make | Alfa Romeo | Holden |
| Model | SZ | HD |
| Year Released | 1991 | 1966 |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 2930 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 208 HP | 122 HP |
| Engine RPM | 6200 RPM | 4600 RPM |
| Torque | 245 Nm | 237 Nm |
| Torque RPM | 4500 RPM | 2200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Vehicle Weight | 1260 kg | 1200 kg |
| Vehicle Length | 4670 mm | 4580 mm |
| Vehicle Width | 1740 mm | 1790 mm |
| Vehicle Height | 1320 mm | 1510 mm |
| Wheelbase Size | 2520 mm | 2700 mm |
