1984 Ford Sierra vs. 1985 Pontiac Firebird
To start off, 1985 Pontiac Firebird is newer by 1 year(s). Which means there will be less support and parts availability for 1984 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1984 Ford Sierra would be higher. At 5,013 cc (8 cylinders), 1985 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1985 Pontiac Firebird (190 HP @ 4800 RPM) has 30 more horse power than 1984 Ford Sierra. (160 HP @ 5700 RPM) In normal driving conditions, 1985 Pontiac Firebird should accelerate faster than 1984 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1985 Pontiac Firebird weights approximately 294 kg more than 1984 Ford Sierra. 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, 1985 Pontiac Firebird (325 Nm @ 3200 RPM) has 109 more torque (in Nm) than 1984 Ford Sierra. (216 Nm @ 4300 RPM). This means 1985 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1984 Ford Sierra.
Compare all specifications:
| 1984 Ford Sierra | 1985 Pontiac Firebird | |
| Make | Ford | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 1984 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 2792 cc | 5013 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 160 HP | 190 HP |
| Engine RPM | 5700 RPM | 4800 RPM |
| Torque | 216 Nm | 325 Nm |
| Torque RPM | 4300 RPM | 3200 RPM |
| Engine Bore Size | 93.1 mm | 95 mm |
| Engine Stroke Size | 68.5 mm | 88.4 mm |
| Engine Compression Ratio | 9.2:1 | 9.5:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1180 kg | 1474 kg |
| Vehicle Length | 4430 mm | 4880 mm |
| Vehicle Width | 1730 mm | 1850 mm |
| Vehicle Height | 1370 mm | 1270 mm |
| Wheelbase Size | 2610 mm | 2570 mm |
