1971 Holden Monaro vs. 1955 Rover P4
To start off, 1971 Holden Monaro is newer by 16 year(s). Which means there will be less support and parts availability for 1955 Rover P4. In addition, the cost of maintenance, including insurance, on 1955 Rover P4 would be higher. At 5,733 cc (8 cylinders), 1971 Holden Monaro is equipped with a bigger engine. In terms of performance, 1971 Holden Monaro (271 HP @ 4800 RPM) has 201 more horse power than 1955 Rover P4. (70 HP @ 4500 RPM). In normal driving conditions, 1971 Holden Monaro should accelerate faster than 1955 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 1955 Rover P4 weights approximately 10 kg more than 1971 Holden Monaro.
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, 1971 Holden Monaro (490 Nm @ 3200 RPM) has 337 more torque (in Nm) than 1955 Rover P4. (153 Nm @ 1750 RPM). This means 1971 Holden Monaro will have an easier job in driving up hills or pulling heavy equipment than 1955 Rover P4.
Compare all specifications:
| 1971 Holden Monaro | 1955 Rover P4 | |
| Make | Holden | Rover |
| Model | Monaro | P4 |
| Year Released | 1971 | 1955 |
| Engine Position | Front | Front |
| Engine Size | 5733 cc | 2230 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 271 HP | 70 HP |
| Engine RPM | 4800 RPM | 4500 RPM |
| Torque | 490 Nm | 153 Nm |
| Torque RPM | 3200 RPM | 1750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1390 kg | 1400 kg |
| Vehicle Length | 4770 mm | 4540 mm |
| Vehicle Width | 1890 mm | 1680 mm |
| Vehicle Height | 1360 mm | 1620 mm |
| Wheelbase Size | 2830 mm | 2830 mm |
