2005 GMC Sierra vs. 1991 Porsche 928
To start off, 2005 GMC Sierra is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Porsche 928. In addition, the cost of maintenance, including insurance, on 1991 Porsche 928 would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (306 HP) has 6 more horse power than 2005 GMC Sierra. (300 HP) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 2005 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1303 kg more than 1991 Porsche 928.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2005 GMC Sierra (488 Nm) has 80 more torque (in Nm) than 1991 Porsche 928. (408 Nm). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 928.
Compare all specifications:
| 2005 GMC Sierra | 1991 Porsche 928 | |
| Make | GMC | Porsche |
| Model | Sierra | 928 |
| Year Released | 2005 | 1991 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 4663 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 300 HP | 306 HP |
| Torque | 488 Nm | 408 Nm |
| Engine Bore Size | 102 mm | 97 mm |
| Engine Stroke Size | 92 mm | 78.9 mm |
| Engine Compression Ratio | 9.4:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2833 kg | 1530 kg |
| Vehicle Length | 6510 mm | 4530 mm |
| Vehicle Width | 2450 mm | 2060 mm |
| Vehicle Height | 1970 mm | 1290 mm |
| Wheelbase Size | 4250 mm | 2510 mm |
| Fuel Tank Capacity | 132 L | 76 L |
