1974 Mazda 929 vs. 1978 Mercury Grand Marquis
To start off, 1978 Mercury Grand Marquis is newer by 4 year(s). Which means there will be less support and parts availability for 1974 Mazda 929. In addition, the cost of maintenance, including insurance, on 1974 Mazda 929 would be higher. At 4,942 cc (8 cylinders), 1978 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 1978 Mercury Grand Marquis (129 HP @ 3600 RPM) has 46 more horse power than 1974 Mazda 929. (83 HP @ 5000 RPM) In normal driving conditions, 1978 Mercury Grand Marquis should accelerate faster than 1974 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mercury Grand Marquis weights approximately 540 kg more than 1974 Mazda 929. 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, 1978 Mercury Grand Marquis (303 Nm @ 2600 RPM) has 168 more torque (in Nm) than 1974 Mazda 929. (135 Nm @ 3000 RPM). This means 1978 Mercury Grand Marquis will have an easier job in driving up hills or pulling heavy equipment than 1974 Mazda 929.
Compare all specifications:
| 1974 Mazda 929 | 1978 Mercury Grand Marquis | |
| Make | Mazda | Mercury |
| Model | 929 | Grand Marquis |
| Year Released | 1974 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1769 cc | 4942 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 83 HP | 129 HP |
| Engine RPM | 5000 RPM | 3600 RPM |
| Torque | 135 Nm | 303 Nm |
| Torque RPM | 3000 RPM | 2600 RPM |
| Engine Bore Size | 80 mm | 101.6 mm |
| Engine Stroke Size | 88 mm | 76.2 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1150 kg | 1690 kg |
| Vehicle Length | 4410 mm | 5400 mm |
| Vehicle Width | 1670 mm | 1980 mm |
| Vehicle Height | 1420 mm | 1390 mm |
| Wheelbase Size | 2520 mm | 2910 mm |
