2005 Jaguar XJ vs. 1977 Pontiac Firebird
To start off, 2005 Jaguar XJ is newer by 28 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 4,942 cc (8 cylinders), 1977 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 2005 Jaguar XJ (254 HP @ 6250 RPM) has 54 more horse power than 1977 Pontiac Firebird. (200 HP @ 4000 RPM). In normal driving conditions, 2005 Jaguar XJ should accelerate faster than 1977 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJ weights approximately 99 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.
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, 1977 Pontiac Firebird (459 Nm @ 2000 RPM) has 124 more torque (in Nm) than 2005 Jaguar XJ. (335 Nm @ 4200 RPM). This means 1977 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 2005 Jaguar XJ.
Compare all specifications:
| 2005 Jaguar XJ | 1977 Pontiac Firebird | |
| Make | Jaguar | Pontiac |
| Model | XJ | Firebird |
| Year Released | 2005 | 1977 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3555 cc | 4942 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 254 HP | 200 HP |
| Engine RPM | 6250 RPM | 4000 RPM |
| Torque | 335 Nm | 459 Nm |
| Torque RPM | 4200 RPM | 2000 RPM |
| Engine Bore Size | 86 mm | 101.6 mm |
| Engine Stroke Size | 76.5 mm | 76.2 mm |
| Engine Compression Ratio | 11.0:1 | 7.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 235 km/hour | 190 km/hour |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1684 kg | 1585 kg |
| Vehicle Length | 5100 mm | 4880 mm |
| Vehicle Width | 1870 mm | 1870 mm |
| Vehicle Height | 1450 mm | 1290 mm |
| Wheelbase Size | 3170 mm | 2750 mm |
