2004 GMC Sierra vs. 1973 Vauxhall Firenza
To start off, 2004 GMC Sierra is newer by 31 year(s). Which means there will be less support and parts availability for 1973 Vauxhall Firenza. In addition, the cost of maintenance, including insurance, on 1973 Vauxhall Firenza would be higher. At 5,965 cc (8 cylinders), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (300 HP) has 223 more horse power than 1973 Vauxhall Firenza. (77 HP). In normal driving conditions, 2004 GMC Sierra should accelerate faster than 1973 Vauxhall Firenza. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 1342 kg more than 1973 Vauxhall Firenza. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2004 GMC Sierra (488 Nm) has 354 more torque (in Nm) than 1973 Vauxhall Firenza. (134 Nm). This means 2004 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1973 Vauxhall Firenza.
Compare all specifications:
| 2004 GMC Sierra | 1973 Vauxhall Firenza | |
| Make | GMC | Vauxhall |
| Model | Sierra | Firenza |
| Year Released | 2004 | 1973 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 1759 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 300 HP | 77 HP |
| Torque | 488 Nm | 134 Nm |
| Engine Bore Size | 102.1 mm | 85.8 mm |
| Engine Stroke Size | 92 mm | 76.2 mm |
| Engine Compression Ratio | 9.4:1 | 8.5:1 |
| Transmission Type | Manual | Manual |
| Number of Seats | 3 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2282 kg | 940 kg |
| Vehicle Length | 5650 mm | 4150 mm |
| Vehicle Width | 2000 mm | 1650 mm |
| Vehicle Height | 1890 mm | 1340 mm |
| Wheelbase Size | 3380 mm | 2470 mm |
