2005 GMC Sierra vs. 1979 Avanti Avanti
To start off, 2005 GMC Sierra is newer by 26 year(s). Which means there will be less support and parts availability for 1979 Avanti Avanti. In addition, the cost of maintenance, including insurance, on 1979 Avanti Avanti would be higher. At 6,570 cc (8 cylinders), 1979 Avanti Avanti is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (321 HP @ 5000 RPM) has 144 more horse power than 1979 Avanti Avanti. (177 HP @ 3400 RPM). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1979 Avanti Avanti. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 690 kg more than 1979 Avanti Avanti. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1979 Avanti Avanti. In wet, icy, snow, or gravel driving conditions, 2005 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, 1979 Avanti Avanti (443 Nm @ 2000 RPM) has 73 more torque (in Nm) than 2005 GMC Sierra. (370 Nm @ 4000 RPM). This means 1979 Avanti Avanti will have an easier job in driving up hills or pulling heavy equipment than 2005 GMC Sierra.
Compare all specifications:
| 2005 GMC Sierra | 1979 Avanti Avanti | |
| Make | GMC | Avanti |
| Model | Sierra | Avanti |
| Year Released | 2005 | 1979 |
| Engine Size | 5965 cc | 6570 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 177 HP |
| Engine RPM | 5000 RPM | 3400 RPM |
| Torque | 370 Nm | 443 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Vehicle Weight | 2270 kg | 1580 kg |
| Vehicle Length | 5790 mm | 4910 mm |
| Vehicle Width | 2000 mm | 1800 mm |
| Vehicle Height | 1850 mm | 1380 mm |
| Wheelbase Size | 3650 mm | 2780 mm |
