1955 AC 2-Litre vs. 1955 Armstrong Siddeley Sapphire
To start off, both 1955 AC 2-Litre and 1955 Armstrong Siddeley Sapphire were released in the same year (1955). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,435 cc (6 cylinders), 1955 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1955 Armstrong Siddeley Sapphire (125 HP @ 4700 RPM) has 49 more horse power than 1955 AC 2-Litre. (76 HP @ 4500 RPM) In normal driving conditions, 1955 Armstrong Siddeley Sapphire should accelerate faster than 1955 AC 2-Litre. With that said, vehicle weight also plays an important factor in acceleration. 1955 Armstrong Siddeley Sapphire weights approximately 510 kg more than 1955 AC 2-Litre. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 1955 Armstrong Siddeley Sapphire (247 Nm @ 2000 RPM) has 111 more torque (in Nm) than 1955 AC 2-Litre. (136 Nm @ 2500 RPM). This means 1955 Armstrong Siddeley Sapphire will have an easier job in driving up hills or pulling heavy equipment than 1955 AC 2-Litre.
Compare all specifications:
| 1955 AC 2-Litre | 1955 Armstrong Siddeley Sapphire | |
| Make | AC | Armstrong Siddeley |
| Model | 2-Litre | Sapphire |
| Year Released | 1955 | 1955 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 3435 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 76 HP | 125 HP |
| Engine RPM | 4500 RPM | 4700 RPM |
| Torque | 136 Nm | 247 Nm |
| Torque RPM | 2500 RPM | 2000 RPM |
| Engine Bore Size | 65 mm | 90 mm |
| Engine Stroke Size | 100 mm | 90 mm |
| Engine Compression Ratio | 6.8:1 | 7.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1320 kg | 1830 kg |
| Vehicle Length | 4680 mm | 5390 mm |
| Vehicle Width | 1710 mm | 1840 mm |
| Vehicle Height | 1560 mm | 1680 mm |
| Wheelbase Size | 2980 mm | 3380 mm |
| Fuel Tank Capacity | 52 L | 72 L |
