1976 Bristol 603 vs. 1991 Porsche 911
To start off, 1991 Porsche 911 is newer by 15 year(s). Which means there will be less support and parts availability for 1976 Bristol 603. In addition, the cost of maintenance, including insurance, on 1976 Bristol 603 would be higher. At 5,210 cc (8 cylinders), 1976 Bristol 603 is equipped with a bigger engine. In terms of performance, 1991 Porsche 911 (228 HP @ 5900 RPM) has 83 more horse power than 1976 Bristol 603. (145 HP @ 4000 RPM) In normal driving conditions, 1991 Porsche 911 should accelerate faster than 1976 Bristol 603. With that said, vehicle weight also plays an important factor in acceleration. 1976 Bristol 603 weights approximately 610 kg more than 1991 Porsche 911.
Let's talk about torque, 1976 Bristol 603 (333 Nm @ 1600 RPM) has 47 more torque (in Nm) than 1991 Porsche 911. (286 Nm @ 4800 RPM). This means 1976 Bristol 603 will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 911.
Compare all specifications:
| 1976 Bristol 603 | 1991 Porsche 911 | |
| Make | Bristol | Porsche |
| Model | 603 | 911 |
| Year Released | 1976 | 1991 |
| Engine Position | Front | Rear |
| Engine Size | 5210 cc | 3163 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 145 HP | 228 HP |
| Engine RPM | 4000 RPM | 5900 RPM |
| Torque | 333 Nm | 286 Nm |
| Torque RPM | 1600 RPM | 4800 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1785 kg | 1175 kg |
| Vehicle Length | 4920 mm | 4300 mm |
| Vehicle Width | 1780 mm | 1660 mm |
| Vehicle Height | 1450 mm | 1260 mm |
