2005 GMC Sierra vs. 1999 Pontiac Firebird
To start off, 2005 GMC Sierra is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1999 Pontiac Firebird would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (300 HP) has 100 more horse power than 1999 Pontiac Firebird. (200 HP). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1999 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1029 kg more than 1999 Pontiac Firebird. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 (489 Nm) has 184 more torque (in Nm) than 1999 Pontiac Firebird. (305 Nm). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Pontiac Firebird.
Compare all specifications:
| 2005 GMC Sierra | 1999 Pontiac Firebird | |
| Make | GMC | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 2005 | 1999 |
| Body Type | Pickup | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 3791 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 300 HP | 200 HP |
| Torque | 489 Nm | 305 Nm |
| Engine Bore Size | 102 mm | 96.5 mm |
| Engine Stroke Size | 92 mm | 86.4 mm |
| Drive Type | Rear | Rear |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2569 kg | 1540 kg |
| Vehicle Length | 6270 mm | 4920 mm |
| Vehicle Width | 2030 mm | 1900 mm |
| Vehicle Height | 1940 mm | 1320 mm |
| Wheelbase Size | 4010 mm | 2570 mm |
| Fuel Tank Capacity | 129 L | 76 L |
