1991 Ford Sierra vs. 1979 GMC Suburban
To start off, 1991 Ford Sierra is newer by 12 year(s). Which means there will be less support and parts availability for 1979 GMC Suburban. In addition, the cost of maintenance, including insurance, on 1979 GMC Suburban would be higher. At 4,093 cc (6 cylinders), 1979 GMC Suburban is equipped with a bigger engine. In terms of performance, 1979 GMC Suburban (129 HP @ 4000 RPM) has 54 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 1979 GMC Suburban should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1979 GMC Suburban weights approximately 1087 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1979 GMC Suburban (285 Nm @ 2000 RPM) has 133 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 1979 GMC Suburban will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 1979 GMC Suburban | |
| Make | Ford | GMC |
| Model | Sierra | Suburban |
| Year Released | 1991 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 4093 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 129 HP |
| Engine RPM | 4500 RPM | 4000 RPM |
| Torque | 152 Nm | 285 Nm |
| Torque RPM | 2200 RPM | 2000 RPM |
| Fuel Type | Diesel | Gasoline |
| Vehicle Weight | 1145 kg | 2232 kg |
| Vehicle Length | 4430 mm | 5480 mm |
| Vehicle Width | 1700 mm | 1950 mm |
| Vehicle Height | 1370 mm | 1800 mm |
| Wheelbase Size | 2620 mm | 3300 mm |
