2007 GMC Sierra vs. 1973 Pontiac Firebird
To start off, 2007 GMC Sierra is newer by 34 year(s). Which means there will be less support and parts availability for 1973 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1973 Pontiac Firebird would be higher. At 7,467 cc (8 cylinders), 1973 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (353 HP @ 5400 RPM) has 18 more horse power than 1973 Pontiac Firebird. (335 HP @ 4800 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1973 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1338 kg more than 1973 Pontiac Firebird. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1973 Pontiac Firebird. In wet, icy, snow, or gravel driving conditions, 2007 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.
Compare all specifications:
| 2007 GMC Sierra | 1973 Pontiac Firebird | |
| Make | GMC | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 2007 | 1973 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 7467 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 353 HP | 335 HP |
| Engine RPM | 5400 RPM | 4800 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2788 kg | 1450 kg |
| Vehicle Length | 6340 mm | 4870 mm |
| Vehicle Width | 2040 mm | 1880 mm |
| Vehicle Height | 1950 mm | 1280 mm |
| Wheelbase Size | 4010 mm | 2750 mm |
