1971 Ford Zephyr vs. 2013 GMC Sierra
To start off, 2013 GMC Sierra is newer by 42 year(s). Which means there will be less support and parts availability for 1971 Ford Zephyr. In addition, the cost of maintenance, including insurance, on 1971 Ford Zephyr would be higher. At 6,200 cc (8 cylinders), 2013 GMC Sierra is equipped with a bigger engine. In terms of performance, 2013 GMC Sierra (397 HP @ 5700 RPM) has 316 more horse power than 1971 Ford Zephyr. (81 HP @ 4750 RPM) In normal driving conditions, 2013 GMC Sierra should accelerate faster than 1971 Ford Zephyr. With that said, vehicle weight also plays an important factor in acceleration. 2013 GMC Sierra weights approximately 1189 kg more than 1971 Ford Zephyr. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 GMC Sierra is all wheel drive (AWD), it will have significant more traction and grip than 1971 Ford Zephyr. In wet, icy, snow, or gravel driving conditions, 2013 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, 2013 GMC Sierra (565 Nm @ 4300 RPM) has 412 more torque (in Nm) than 1971 Ford Zephyr. (153 Nm @ 2750 RPM). This means 2013 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1971 Ford Zephyr.
Compare all specifications:
| 1971 Ford Zephyr | 2013 GMC Sierra | |
| Make | Ford | GMC |
| Model | Zephyr | Sierra |
| Year Released | 1971 | 2013 |
| Engine Position | Front | Front |
| Engine Size | 1996 cc | 6200 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 81 HP | 397 HP |
| Engine RPM | 4750 RPM | 5700 RPM |
| Torque | 153 Nm | 565 Nm |
| Torque RPM | 2750 RPM | 4300 RPM |
| Engine Bore Size | 93.7 mm | 103 mm |
| Engine Stroke Size | 72.4 mm | 92 mm |
| Fuel Type | Gasoline | Flex Fuel |
| Drive Type | Rear | AWD |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1250 kg | 2439 kg |
| Vehicle Length | 4710 mm | 5847 mm |
| Vehicle Width | 1820 mm | 2032 mm |
| Vehicle Height | 1490 mm | 1872 mm |
| Wheelbase Size | 2930 mm | 3645 mm |
