1970 AC 428 vs. 1956 Armstrong Siddeley Sapphire
To start off, 1970 AC 428 is newer by 14 year(s). Which means there will be less support and parts availability for 1956 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1956 Armstrong Siddeley Sapphire would be higher. At 7,003 cc (8 cylinders), 1970 AC 428 is equipped with a bigger engine. In terms of performance, 1970 AC 428 (298 HP @ 4600 RPM) has 180 more horse power than 1956 Armstrong Siddeley Sapphire. (118 HP @ 5000 RPM). In normal driving conditions, 1970 AC 428 should accelerate faster than 1956 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1956 Armstrong Siddeley Sapphire weights approximately 220 kg more than 1970 AC 428.
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, 1970 AC 428 (640 Nm @ 2800 RPM) has 451 more torque (in Nm) than 1956 Armstrong Siddeley Sapphire. (189 Nm @ 3500 RPM). This means 1970 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1956 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1970 AC 428 | 1956 Armstrong Siddeley Sapphire | |
| Make | AC | Armstrong Siddeley |
| Model | 428 | Sapphire |
| Year Released | 1970 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 2290 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 118 HP |
| Engine RPM | 4600 RPM | 5000 RPM |
| Torque | 640 Nm | 189 Nm |
| Torque RPM | 2800 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1650 kg |
| Vehicle Length | 4430 mm | 4910 mm |
| Vehicle Width | 1710 mm | 1840 mm |
| Vehicle Height | 1310 mm | 1670 mm |
| Wheelbase Size | 2450 mm | 2900 mm |
