2003 Ford 427 vs. 2005 Mercury Mariner
To start off, 2005 Mercury Mariner is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Ford 427. In addition, the cost of maintenance, including insurance, on 2003 Ford 427 would be higher. At 6,997 cc (10 cylinders), 2003 Ford 427 is equipped with a bigger engine. In terms of performance, 2003 Ford 427 (582 HP @ 6500 RPM) has 429 more horse power than 2005 Mercury Mariner. (153 HP @ 5800 RPM). In normal driving conditions, 2003 Ford 427 should accelerate faster than 2005 Mercury Mariner.
Because 2005 Mercury Mariner is four wheel drive (4WD), it will have significant more traction and grip than 2003 Ford 427. In wet, icy, snow, or gravel driving conditions, 2005 Mercury Mariner will offer significantly more control. 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, 2003 Ford 427 (704 Nm @ 5500 RPM) has 498 more torque (in Nm) than 2005 Mercury Mariner. (206 Nm @ 4250 RPM). This means 2003 Ford 427 will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercury Mariner.
Compare all specifications:
| 2003 Ford 427 | 2005 Mercury Mariner | |
| Make | Ford | Mercury |
| Model | 427 | Mariner |
| Year Released | 2003 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 6997 cc | 2261 cc |
| Engine Cylinders | 10 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 582 HP | 153 HP |
| Engine RPM | 6500 RPM | 5800 RPM |
| Torque | 704 Nm | 206 Nm |
| Torque RPM | 5500 RPM | 4250 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
