2004 BMW 645 vs. 1956 Cadillac 6239D
To start off, 2004 BMW 645 is newer by 48 year(s). Which means there will be less support and parts availability for 1956 Cadillac 6239D. In addition, the cost of maintenance, including insurance, on 1956 Cadillac 6239D would be higher. At 5,972 cc (8 cylinders), 1956 Cadillac 6239D is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (322 HP @ 7400 RPM) has 37 more horse power than 1956 Cadillac 6239D. (285 HP @ 4600 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 1956 Cadillac 6239D. With that said, vehicle weight also plays an important factor in acceleration. 1956 Cadillac 6239D weights approximately 295 kg more than 2004 BMW 645.
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) has 96 more torque (in Nm) than 2004 BMW 645. (447 Nm). This means 1956 Cadillac 6239D will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 645.
Compare all specifications:
| 2004 BMW 645 | 1956 Cadillac 6239D | |
| Make | BMW | Cadillac |
| Model | 645 | 6239D |
| Year Released | 2004 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 5972 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 322 HP | 285 HP |
| Engine RPM | 7400 RPM | 4600 RPM |
| Torque | 447 Nm | 543 Nm |
| Engine Bore Size | 92 mm | 101.6 mm |
| Engine Stroke Size | 83 mm | 92.1 mm |
| Engine Compression Ratio | 10.5:1 | 9.7:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1715 kg | 2010 kg |
| Vehicle Length | 4840 mm | 5650 mm |
| Vehicle Width | 1860 mm | 2040 mm |
| Vehicle Height | 1380 mm | 1520 mm |
| Wheelbase Size | 2790 mm | 3280 mm |
| Fuel Tank Capacity | 70 L | 75 L |
