1971 Chevrolet Impala vs. 1985 Ford Sierra
To start off, 1985 Ford Sierra is newer by 14 year(s). Which means there will be less support and parts availability for 1971 Chevrolet Impala. In addition, the cost of maintenance, including insurance, on 1971 Chevrolet Impala would be higher. At 4,092 cc (6 cylinders), 1971 Chevrolet Impala is equipped with a bigger engine. In terms of performance, 1985 Ford Sierra (148 HP @ 5700 RPM) has 38 more horse power than 1971 Chevrolet Impala. (110 HP @ 3800 RPM) In normal driving conditions, 1985 Ford Sierra should accelerate faster than 1971 Chevrolet Impala. With that said, vehicle weight also plays an important factor in acceleration. 1971 Chevrolet Impala weights approximately 510 kg more than 1985 Ford Sierra.
Let's talk about torque, 1971 Chevrolet Impala (256 Nm @ 1600 RPM) has 36 more torque (in Nm) than 1985 Ford Sierra. (220 Nm @ 3800 RPM). This means 1971 Chevrolet Impala will have an easier job in driving up hills or pulling heavy equipment than 1985 Ford Sierra.
Compare all specifications:
| 1971 Chevrolet Impala | 1985 Ford Sierra | |
| Make | Chevrolet | Ford |
| Model | Impala | Sierra |
| Year Released | 1971 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 4092 cc | 2790 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 110 HP | 148 HP |
| Engine RPM | 3800 RPM | 5700 RPM |
| Torque | 256 Nm | 220 Nm |
| Torque RPM | 1600 RPM | 3800 RPM |
| Engine Bore Size | 98.2 mm | 93 mm |
| Engine Stroke Size | 89.6 mm | 68.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1715 kg | 1205 kg |
| Vehicle Length | 5600 mm | 4400 mm |
| Vehicle Width | 2030 mm | 1680 mm |
| Vehicle Height | 1370 mm | 1370 mm |
| Wheelbase Size | 3100 mm | 2620 mm |
