1978 Cadillac Seville vs. 1977 Pontiac Firebird
To start off, 1978 Cadillac Seville is newer by 1 year(s). Which means there will be less support and parts availability for 1977 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1977 Pontiac Firebird would be higher. At 6,547 cc (8 cylinders), 1977 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1977 Pontiac Firebird (285 HP @ 4400 RPM) has 162 more horse power than 1978 Cadillac Seville. (123 HP @ 3600 RPM) In normal driving conditions, 1977 Pontiac Firebird should accelerate faster than 1978 Cadillac Seville. With that said, vehicle weight also plays an important factor in acceleration. 1978 Cadillac Seville weights approximately 294 kg more than 1977 Pontiac Firebird.
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, 1977 Pontiac Firebird (421 Nm @ 2400 RPM) has 117 more torque (in Nm) than 1978 Cadillac Seville. (304 Nm @ 1600 RPM). This means 1977 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1978 Cadillac Seville.
Compare all specifications:
| 1978 Cadillac Seville | 1977 Pontiac Firebird | |
| Make | Cadillac | Pontiac |
| Model | Seville | Firebird |
| Year Released | 1978 | 1977 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5735 cc | 6547 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 123 HP | 285 HP |
| Engine RPM | 3600 RPM | 4400 RPM |
| Torque | 304 Nm | 421 Nm |
| Torque RPM | 1600 RPM | 2400 RPM |
| Engine Bore Size | 103 mm | 104.7 mm |
| Engine Stroke Size | 86 mm | 95.3 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1890 kg | 1596 kg |
| Vehicle Length | 5190 mm | 4880 mm |
| Vehicle Width | 1830 mm | 1870 mm |
| Vehicle Height | 1400 mm | 1290 mm |
| Wheelbase Size | 2910 mm | 2750 mm |
| Fuel Tank Capacity | 79 L | 76 L |
