1973 Chevrolet Impala vs. 2009 GMC Acadia
To start off, 2009 GMC Acadia is newer by 36 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 4,097 cc (6 cylinders), 1973 Chevrolet Impala is equipped with a bigger engine. In terms of performance, 2009 GMC Acadia (288 HP @ 6300 RPM) has 178 more horse power than 1973 Chevrolet Impala. (110 HP @ 3800 RPM) In normal driving conditions, 2009 GMC Acadia should accelerate faster than 1973 Chevrolet Impala. With that said, vehicle weight also plays an important factor in acceleration. 2009 GMC Acadia weights approximately 426 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 2009 GMC Acadia 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, 2009 GMC Acadia 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, 2009 GMC Acadia (366 Nm @ 3400 RPM) has 115 more torque (in Nm) than 1973 Chevrolet Impala. (251 Nm @ 1600 RPM). This means 2009 GMC Acadia will have an easier job in driving up hills or pulling heavy equipment than 1973 Chevrolet Impala. 2009 GMC Acadia has automatic transmission and 1973 Chevrolet Impala has manual transmission. 1973 Chevrolet Impala will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 GMC Acadia will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1973 Chevrolet Impala | 2009 GMC Acadia | |
| Make | Chevrolet | GMC |
| Model | Impala | Acadia |
| Year Released | 1973 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 4097 cc | 3598 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 110 HP | 288 HP |
| Engine RPM | 3800 RPM | 6300 RPM |
| Torque | 251 Nm | 366 Nm |
| Torque RPM | 1600 RPM | 3400 RPM |
| Engine Bore Size | 98.3 mm | 96 mm |
| Engine Stroke Size | 89.6 mm | 83.1 mm |
| Engine Compression Ratio | 8.5:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Vehicle Weight | 1715 kg | 2141 kg |
| Vehicle Length | 5600 mm | 5100 mm |
| Vehicle Width | 2030 mm | 1990 mm |
| Vehicle Height | 1370 mm | 1780 mm |
| Wheelbase Size | 3100 mm | 3030 mm |
