1951 Allard J2 vs. 1975 AC 428
To start off, 1975 AC 428 is newer by 24 year(s). Which means there will be less support and parts availability for 1951 Allard J2. In addition, the cost of maintenance, including insurance, on 1951 Allard J2 would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 1975 AC 428 (298 HP @ 4600 RPM) has 140 more horse power than 1951 Allard J2. (158 HP @ 3800 RPM) In normal driving conditions, 1975 AC 428 should accelerate faster than 1951 Allard J2. With that said, vehicle weight also plays an important factor in acceleration. 1975 AC 428 weights approximately 450 kg more than 1951 Allard J2. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1951 Allard J2 | 1975 AC 428 | |
| Make | Allard | AC |
| Model | J2 | 428 |
| Year Released | 1951 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 5415 cc | 7003 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 158 HP | 298 HP |
| Engine RPM | 3800 RPM | 4600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 980 kg | 1430 kg |
| Vehicle Length | 3780 mm | 4430 mm |
| Vehicle Width | 1730 mm | 1710 mm |
| Vehicle Height | 1300 mm | 1310 mm |
| Wheelbase Size | 2550 mm | 2450 mm |
