1955 Jensen Interceptor vs. 1981 Pontiac Firebird
To start off, 1981 Pontiac Firebird is newer by 26 year(s). Which means there will be less support and parts availability for 1955 Jensen Interceptor. In addition, the cost of maintenance, including insurance, on 1955 Jensen Interceptor would be higher. At 5,012 cc (8 cylinders), 1981 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1981 Pontiac Firebird (145 HP @ 3800 RPM) has 16 more horse power than 1955 Jensen Interceptor. (129 HP @ 3700 RPM) In normal driving conditions, 1981 Pontiac Firebird should accelerate faster than 1955 Jensen Interceptor. With that said, vehicle weight also plays an important factor in acceleration. 1981 Pontiac Firebird weights approximately 47 kg more than 1955 Jensen Interceptor. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1981 Pontiac Firebird (324 Nm @ 2400 RPM) has 37 more torque (in Nm) than 1955 Jensen Interceptor. (287 Nm @ 2200 RPM). This means 1981 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1955 Jensen Interceptor.
Compare all specifications:
| 1955 Jensen Interceptor | 1981 Pontiac Firebird | |
| Make | Jensen | Pontiac |
| Model | Interceptor | Firebird |
| Year Released | 1955 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 3993 cc | 5012 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 129 HP | 145 HP |
| Engine RPM | 3700 RPM | 3800 RPM |
| Torque | 287 Nm | 324 Nm |
| Torque RPM | 2200 RPM | 2400 RPM |
| Engine Bore Size | 87.3 mm | 95 mm |
| Engine Stroke Size | 111.1 mm | 88.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1495 kg | 1542 kg |
| Vehicle Length | 4780 mm | 5040 mm |
| Vehicle Width | 1680 mm | 1860 mm |
| Vehicle Height | 1480 mm | 1260 mm |
| Wheelbase Size | 2860 mm | 2750 mm |
