2007 GMC Sierra vs. 1977 Pontiac Firebird
To start off, 2007 GMC Sierra is newer by 30 year(s). Which means there will be less support and parts availability for 1977 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1977 Pontiac Firebird would be higher. At 5,357 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (315 HP @ 5200 RPM) has 115 more horse power than 1977 Pontiac Firebird. (200 HP @ 4000 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1977 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 850 kg more than 1977 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 1977 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. Let's talk about torque, 1977 Pontiac Firebird (459 Nm @ 2000 RPM) has 1 more torque (in Nm) than 2007 GMC Sierra. (458 Nm @ 4400 RPM). This means 1977 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 2007 GMC Sierra.
Compare all specifications:
| 2007 GMC Sierra | 1977 Pontiac Firebird | |
| Make | GMC | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 2007 | 1977 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5357 cc | 4942 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 315 HP | 200 HP |
| Engine RPM | 5200 RPM | 4000 RPM |
| Torque | 458 Nm | 459 Nm |
| Torque RPM | 4400 RPM | 2000 RPM |
| Engine Bore Size | 96 mm | 101.6 mm |
| Engine Stroke Size | 92 mm | 76.2 mm |
| Engine Compression Ratio | 9.4:1 | 7.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2435 kg | 1585 kg |
| Vehicle Length | 6320 mm | 4880 mm |
| Vehicle Width | 2040 mm | 1870 mm |
| Vehicle Height | 1880 mm | 1290 mm |
| Wheelbase Size | 4010 mm | 2750 mm |
