1973 Chevrolet Impala vs. 2006 GMC Sierra
To start off, 2006 GMC Sierra is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Chevrolet Impala. In addition, the cost of maintenance, including insurance, on 1973 Chevrolet Impala would be higher. At 5,965 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (300 HP @ 4400 RPM) has 190 more horse power than 1973 Chevrolet Impala. (110 HP @ 3800 RPM) In normal driving conditions, 2006 GMC Sierra should accelerate faster than 1973 Chevrolet Impala. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 898 kg more than 1973 Chevrolet Impala. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1973 Chevrolet Impala. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 GMC Sierra (489 Nm @ 4000 RPM) has 238 more torque (in Nm) than 1973 Chevrolet Impala. (251 Nm @ 1600 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1973 Chevrolet Impala.
Compare all specifications:
| 1973 Chevrolet Impala | 2006 GMC Sierra | |
| Make | Chevrolet | GMC |
| Model | Impala | Sierra |
| Year Released | 1973 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 4097 cc | 5965 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 110 HP | 300 HP |
| Engine RPM | 3800 RPM | 4400 RPM |
| Torque | 251 Nm | 489 Nm |
| Torque RPM | 1600 RPM | 4000 RPM |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 6 seats |
| Vehicle Weight | 1715 kg | 2613 kg |
| Vehicle Length | 5600 mm | 6570 mm |
| Vehicle Width | 2030 mm | 2030 mm |
| Vehicle Height | 1370 mm | 1970 mm |
| Wheelbase Size | 3100 mm | 4250 mm |
