1974 AC 428 vs. 1977 Mazda 929
To start off, 1977 Mazda 929 is newer by 3 year(s). Which means there will be less support and parts availability for 1974 AC 428. In addition, the cost of maintenance, including insurance, on 1974 AC 428 would be higher. At 7,003 cc (8 cylinders), 1974 AC 428 is equipped with a bigger engine. In terms of performance, 1974 AC 428 (298 HP @ 4600 RPM) has 215 more horse power than 1977 Mazda 929. (83 HP @ 5000 RPM). In normal driving conditions, 1974 AC 428 should accelerate faster than 1977 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1974 AC 428 weights approximately 356 kg more than 1977 Mazda 929. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1974 AC 428 (639 Nm @ 2800 RPM) has 505 more torque (in Nm) than 1977 Mazda 929. (134 Nm @ 3000 RPM). This means 1974 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1977 Mazda 929.
Compare all specifications:
| 1974 AC 428 | 1977 Mazda 929 | |
| Make | AC | Mazda |
| Model | 428 | 929 |
| Year Released | 1974 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 1769 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 83 HP |
| Engine RPM | 4600 RPM | 5000 RPM |
| Torque | 639 Nm | 134 Nm |
| Torque RPM | 2800 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1074 kg |
| Vehicle Length | 4430 mm | 4410 mm |
| Vehicle Width | 1710 mm | 1670 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2450 mm | 2520 mm |
