2003 GMC Sierra vs. 1970 Pontiac Firebird
To start off, 2003 GMC Sierra is newer by 33 year(s). Which means there will be less support and parts availability for 1970 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1970 Pontiac Firebird would be higher. At 6,547 cc (8 cylinders), 1970 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 2003 GMC Sierra (321 HP @ 5000 RPM) has 148 more horse power than 1970 Pontiac Firebird. (173 HP @ 4400 RPM). In normal driving conditions, 2003 GMC Sierra should accelerate faster than 1970 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2003 GMC Sierra weights approximately 674 kg more than 1970 Pontiac Firebird. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1970 Pontiac Firebird. In wet, icy, snow, or gravel driving conditions, 2003 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, 1970 Pontiac Firebird (421 Nm @ 2400 RPM) has 51 more torque (in Nm) than 2003 GMC Sierra. (370 Nm @ 4000 RPM). This means 1970 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 2003 GMC Sierra.
Compare all specifications:
| 2003 GMC Sierra | 1970 Pontiac Firebird | |
| Make | GMC | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 2003 | 1970 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5967 cc | 6547 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 321 HP | 173 HP |
| Engine RPM | 5000 RPM | 4400 RPM |
| Torque | 370 Nm | 421 Nm |
| Torque RPM | 4000 RPM | 2400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2270 kg | 1596 kg |
| Vehicle Length | 5790 mm | 4880 mm |
| Vehicle Width | 2000 mm | 1870 mm |
| Vehicle Height | 1850 mm | 1290 mm |
| Wheelbase Size | 3650 mm | 2750 mm |
| Fuel Tank Capacity | 117 L | 76 L |
