1961 AC Ace vs. 1977 BMW 728
To start off, 1977 BMW 728 is newer by 16 year(s). Which means there will be less support and parts availability for 1961 AC Ace. In addition, the cost of maintenance, including insurance, on 1961 AC Ace would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 1977 BMW 728 (170 HP @ 6000 RPM) has 70 more horse power than 1961 AC Ace. (100 HP @ 5500 RPM) In normal driving conditions, 1977 BMW 728 should accelerate faster than 1961 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 723 kg more than 1961 AC Ace. 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, 1977 BMW 728 (235 Nm @ 3700 RPM) has 55 more torque (in Nm) than 1961 AC Ace. (180 Nm @ 2000 RPM). This means 1977 BMW 728 will have an easier job in driving up hills or pulling heavy equipment than 1961 AC Ace.
Compare all specifications:
| 1961 AC Ace | 1977 BMW 728 | |
| Make | AC | BMW |
| Model | Ace | 728 |
| Year Released | 1961 | 1977 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2553 cc | 2788 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 100 HP | 170 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 180 Nm | 235 Nm |
| Torque RPM | 2000 RPM | 3700 RPM |
| Engine Bore Size | 82.6 mm | 86 mm |
| Engine Stroke Size | 79.5 mm | 80 mm |
| Engine Compression Ratio | 7.8:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 813 kg | 1536 kg |
| Vehicle Length | 3860 mm | 4870 mm |
| Vehicle Width | 1490 mm | 1810 mm |
| Vehicle Height | 1250 mm | 1440 mm |
| Wheelbase Size | 2290 mm | 2800 mm |
| Fuel Tank Capacity | 54 L | 85 L |
