1987 Ford Sierra vs. 1985 Pontiac Firebird
To start off, 1987 Ford Sierra is newer by 2 year(s). Which means there will be less support and parts availability for 1985 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1985 Pontiac Firebird would be higher. At 2,838 cc (6 cylinders), 1985 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1985 Pontiac Firebird (135 HP @ 5100 RPM) has 31 more horse power than 1987 Ford Sierra. (104 HP @ 5200 RPM) In normal driving conditions, 1985 Pontiac Firebird should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1985 Pontiac Firebird weights approximately 307 kg more than 1987 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 (223 Nm @ 3600 RPM) has 63 more torque (in Nm) than 1987 Ford Sierra. (160 Nm @ 4000 RPM). This means 1985 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1987 Ford Sierra | 1985 Pontiac Firebird | |
| Make | Ford | Pontiac |
| Model | Sierra | Firebird |
| Year Released | 1987 | 1985 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 2838 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 104 HP | 135 HP |
| Engine RPM | 5200 RPM | 5100 RPM |
| Torque | 160 Nm | 223 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Engine Bore Size | 90.8 mm | 88.9 mm |
| Engine Stroke Size | 77 mm | 76.2 mm |
| Engine Compression Ratio | 9.2:1 | 8.9:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1055 kg | 1362 kg |
| Vehicle Length | 4500 mm | 4850 mm |
| Vehicle Width | 1680 mm | 1850 mm |
| Vehicle Height | 1400 mm | 1270 mm |
| Wheelbase Size | 2620 mm | 2570 mm |
