2007 GMC Sierra vs. 1978 Pontiac Firebird
To start off, 2007 GMC Sierra is newer by 29 year(s). Which means there will be less support and parts availability for 1978 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1978 Pontiac Firebird would be higher. At 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (312 HP @ 4400 RPM) has 112 more horse power than 1978 Pontiac Firebird. (200 HP @ 4000 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1978 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1093 kg more than 1978 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 1978 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, 2007 GMC Sierra (506 Nm @ 4400 RPM) has 47 more torque (in Nm) than 1978 Pontiac Firebird. (459 Nm @ 2000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1978 Pontiac Firebird.
Compare all specifications:
| 2007 GMC Sierra | 1978 Pontiac Firebird | |
| Make | GMC | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 2007 | 1978 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 4942 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 312 HP | 200 HP |
| Engine RPM | 4400 RPM | 4000 RPM |
| Torque | 506 Nm | 459 Nm |
| Torque RPM | 4400 RPM | 2000 RPM |
| Engine Bore Size | 102 mm | 101.6 mm |
| Engine Stroke Size | 92 mm | 76.2 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 3 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2678 kg | 1585 kg |
| Vehicle Length | 5720 mm | 4880 mm |
| Vehicle Width | 2440 mm | 1870 mm |
| Vehicle Height | 1930 mm | 1290 mm |
| Wheelbase Size | 3380 mm | 2750 mm |
