1986 AC Ace vs. 1978 Mercury Grand Marquis
To start off, 1986 AC Ace is newer by 8 year(s). Which means there will be less support and parts availability for 1978 Mercury Grand Marquis. In addition, the cost of maintenance, including insurance, on 1978 Mercury Grand Marquis would be higher. At 5,766 cc (8 cylinders), 1978 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 1986 AC Ace (201 HP @ 6000 RPM) has 62 more horse power than 1978 Mercury Grand Marquis. (139 HP @ 3200 RPM). In normal driving conditions, 1986 AC Ace should accelerate faster than 1978 Mercury Grand Marquis. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mercury Grand Marquis weights approximately 690 kg more than 1986 AC Ace.
Because 1986 AC Ace is four wheel drive (4WD), it will have significant more traction and grip than 1978 Mercury Grand Marquis. In wet, icy, snow, or gravel driving conditions, 1986 AC Ace will offer significantly more control. 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 (353 Nm @ 2200 RPM) has 77 more torque (in Nm) than 1986 AC Ace. (276 Nm @ 4500 RPM). This means 1978 Mercury Grand Marquis will have an easier job in driving up hills or pulling heavy equipment than 1986 AC Ace.
Compare all specifications:
| 1986 AC Ace | 1978 Mercury Grand Marquis | |
| Make | AC | Mercury |
| Model | Ace | Grand Marquis |
| Year Released | 1986 | 1978 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1994 cc | 5766 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 201 HP | 139 HP |
| Engine RPM | 6000 RPM | 3200 RPM |
| Torque | 276 Nm | 353 Nm |
| Torque RPM | 4500 RPM | 2200 RPM |
| Drive Type | 4WD | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1020 kg | 1710 kg |
| Vehicle Length | 3970 mm | 5400 mm |
| Vehicle Width | 1820 mm | 1980 mm |
| Vehicle Height | 1180 mm | 1390 mm |
| Wheelbase Size | 2480 mm | 2910 mm |
