1991 Ford Thunderbird vs. 1955 Rover P4
To start off, 1991 Ford Thunderbird is newer by 36 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 3,791 cc (6 cylinders), 1991 Ford Thunderbird is equipped with a bigger engine. In terms of performance, 1991 Ford Thunderbird (138 HP @ 3800 RPM) has 68 more horse power than 1955 Rover P4. (70 HP @ 4500 RPM). In normal driving conditions, 1991 Ford Thunderbird should accelerate faster than 1955 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Thunderbird weights approximately 210 kg more than 1955 Rover P4. 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 Ford Thunderbird (291 Nm @ 2400 RPM) has 138 more torque (in Nm) than 1955 Rover P4. (153 Nm @ 1750 RPM). This means 1991 Ford Thunderbird will have an easier job in driving up hills or pulling heavy equipment than 1955 Rover P4.
Compare all specifications:
| 1991 Ford Thunderbird | 1955 Rover P4 | |
| Make | Ford | Rover |
| Model | Thunderbird | P4 |
| Year Released | 1991 | 1955 |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 2230 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 138 HP | 70 HP |
| Engine RPM | 3800 RPM | 4500 RPM |
| Torque | 291 Nm | 153 Nm |
| Torque RPM | 2400 RPM | 1750 RPM |
| Engine Bore Size | 96.9 mm | 73.1 mm |
| Engine Stroke Size | 86 mm | 88.9 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1610 kg | 1400 kg |
| Vehicle Length | 5050 mm | 4540 mm |
| Vehicle Width | 1850 mm | 1680 mm |
| Vehicle Height | 1350 mm | 1620 mm |
| Wheelbase Size | 2880 mm | 2830 mm |
| Fuel Tank Capacity | 45 L | 45 L |
