2007 GMC Sierra vs. 1973 Mercury Comet
To start off, 2007 GMC Sierra is newer by 34 year(s). Which means there will be less support and parts availability for 1973 Mercury Comet. In addition, the cost of maintenance, including insurance, on 1973 Mercury Comet would be higher. At 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (312 HP @ 4400 RPM) has 229 more horse power than 1973 Mercury Comet. (83 HP @ 3800 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1973 Mercury Comet. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1570 kg more than 1973 Mercury Comet. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1973 Mercury Comet. In wet, icy, snow, or gravel driving conditions, 2007 GMC Sierra 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, 2007 GMC Sierra (506 Nm @ 4400 RPM) has 301 more torque (in Nm) than 1973 Mercury Comet. (205 Nm @ 1800 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1973 Mercury Comet.
Compare all specifications:
| 2007 GMC Sierra | 1973 Mercury Comet | |
| Make | GMC | Mercury |
| Model | Sierra | Comet |
| Year Released | 2007 | 1973 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 3271 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 312 HP | 83 HP |
| Engine RPM | 4400 RPM | 3800 RPM |
| Torque | 506 Nm | 205 Nm |
| Torque RPM | 4400 RPM | 1800 RPM |
| Engine Bore Size | 102 mm | 93.5 mm |
| Engine Stroke Size | 92 mm | 79.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 2790 kg | 1220 kg |
| Vehicle Length | 6340 mm | 4620 mm |
| Vehicle Width | 2440 mm | 1800 mm |
| Vehicle Height | 1940 mm | 1350 mm |
| Wheelbase Size | 4010 mm | 2630 mm |
