1956 Cadillac 6239D vs. 1949 Rover P4
To start off, 1956 Cadillac 6239D is newer by 7 year(s). Which means there will be less support and parts availability for 1949 Rover P4. In addition, the cost of maintenance, including insurance, on 1949 Rover P4 would be higher. At 5,972 cc (8 cylinders), 1956 Cadillac 6239D is equipped with a bigger engine. In terms of performance, 1956 Cadillac 6239D (285 HP @ 4600 RPM) has 211 more horse power than 1949 Rover P4. (74 HP @ 4200 RPM). In normal driving conditions, 1956 Cadillac 6239D should accelerate faster than 1949 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 1956 Cadillac 6239D weights approximately 559 kg more than 1949 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, 1956 Cadillac 6239D (543 Nm @ 2800 RPM) has 393 more torque (in Nm) than 1949 Rover P4. (150 Nm @ 2500 RPM). This means 1956 Cadillac 6239D will have an easier job in driving up hills or pulling heavy equipment than 1949 Rover P4. 1956 Cadillac 6239D has automatic transmission and 1949 Rover P4 has manual transmission. 1949 Rover P4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1956 Cadillac 6239D will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1956 Cadillac 6239D | 1949 Rover P4 | |
| Make | Cadillac | Rover |
| Model | 6239D | P4 |
| Year Released | 1956 | 1949 |
| Engine Position | Front | Front |
| Engine Size | 5972 cc | 2102 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 285 HP | 74 HP |
| Engine RPM | 4600 RPM | 4200 RPM |
| Torque | 543 Nm | 150 Nm |
| Torque RPM | 2800 RPM | 2500 RPM |
| Engine Bore Size | 101.6 mm | 65.2 mm |
| Engine Stroke Size | 92.1 mm | 105 mm |
| Engine Compression Ratio | 9.7:1 | 7.3:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2010 kg | 1451 kg |
| Vehicle Length | 5650 mm | 4590 mm |
| Vehicle Width | 2040 mm | 1680 mm |
| Vehicle Height | 1520 mm | 1620 mm |
| Wheelbase Size | 3280 mm | 2830 mm |
| Fuel Tank Capacity | 75 L | 52 L |
