1949 Allard J1 vs. 1950 Bristol 401
To start off, 1950 Bristol 401 is newer by 1 year(s). Which means there will be less support and parts availability for 1949 Allard J1. In addition, the cost of maintenance, including insurance, on 1949 Allard J1 would be higher. At 3,917 cc (8 cylinders), 1949 Allard J1 is equipped with a bigger engine. In terms of performance, 1949 Allard J1 (100 HP @ 3800 RPM) has 28 more horse power than 1950 Bristol 401. (72 HP @ 4500 RPM). In normal driving conditions, 1949 Allard J1 should accelerate faster than 1950 Bristol 401. With that said, vehicle weight also plays an important factor in acceleration. 1950 Bristol 401 weights approximately 85 kg more than 1949 Allard J1.
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, 1949 Allard J1 (306 Nm @ 2500 RPM) has 161 more torque (in Nm) than 1950 Bristol 401. (145 Nm @ 3500 RPM). This means 1949 Allard J1 will have an easier job in driving up hills or pulling heavy equipment than 1950 Bristol 401.
Compare all specifications:
| 1949 Allard J1 | 1950 Bristol 401 | |
| Make | Allard | Bristol |
| Model | J1 | 401 |
| Year Released | 1949 | 1950 |
| Engine Position | Front | Front |
| Engine Size | 3917 cc | 1971 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 100 HP | 72 HP |
| Engine RPM | 3800 RPM | 4500 RPM |
| Torque | 306 Nm | 145 Nm |
| Torque RPM | 2500 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 66 mm |
| Engine Stroke Size | 95.3 mm | 96 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1140 kg | 1225 kg |
| Vehicle Length | 3690 mm | 4870 mm |
| Vehicle Width | 1480 mm | 1710 mm |
| Vehicle Height | 1510 mm | 1530 mm |
| Wheelbase Size | 2440 mm | 2900 mm |
