1978 Cadillac Seville vs. 1974 AC 428
To start off, 1978 Cadillac Seville is newer by 4 year(s). Which means there will be less support and parts availability for 1974 AC 428. In addition, the cost of maintenance, including insurance, on 1974 AC 428 would be higher. At 7,003 cc (8 cylinders), 1974 AC 428 is equipped with a bigger engine. In terms of performance, 1974 AC 428 (298 HP @ 4600 RPM) has 175 more horse power than 1978 Cadillac Seville. (123 HP @ 3600 RPM) In normal driving conditions, 1974 AC 428 should accelerate faster than 1978 Cadillac Seville. With that said, vehicle weight also plays an important factor in acceleration. 1978 Cadillac Seville weights approximately 460 kg more than 1974 AC 428.
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, 1974 AC 428 (639 Nm @ 2800 RPM) has 335 more torque (in Nm) than 1978 Cadillac Seville. (304 Nm @ 1600 RPM). This means 1974 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1978 Cadillac Seville.
Compare all specifications:
| 1978 Cadillac Seville | 1974 AC 428 | |
| Make | Cadillac | AC |
| Model | Seville | 428 |
| Year Released | 1978 | 1974 |
| Engine Position | Front | Front |
| Engine Size | 5735 cc | 7003 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 298 HP |
| Engine RPM | 3600 RPM | 4600 RPM |
| Torque | 304 Nm | 639 Nm |
| Torque RPM | 1600 RPM | 2800 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1890 kg | 1430 kg |
| Vehicle Length | 5190 mm | 4430 mm |
| Vehicle Width | 1830 mm | 1710 mm |
| Vehicle Height | 1400 mm | 1310 mm |
| Wheelbase Size | 2910 mm | 2450 mm |
