1970 AC 428 vs. 1991 Buick Roadmaster
To start off, 1991 Buick Roadmaster is newer by 21 year(s). Which means there will be less support and parts availability for 1970 AC 428. In addition, the cost of maintenance, including insurance, on 1970 AC 428 would be higher. At 7,003 cc (8 cylinders), 1970 AC 428 is equipped with a bigger engine. In terms of performance, 1970 AC 428 (298 HP @ 4600 RPM) has 121 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM). In normal driving conditions, 1970 AC 428 should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 410 kg more than 1970 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, 1970 AC 428 (640 Nm @ 2800 RPM) has 247 more torque (in Nm) than 1991 Buick Roadmaster. (393 Nm @ 2400 RPM). This means 1970 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Roadmaster. 1991 Buick Roadmaster has automatic transmission and 1970 AC 428 has manual transmission. 1970 AC 428 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1991 Buick Roadmaster will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1970 AC 428 | 1991 Buick Roadmaster | |
| Make | AC | Buick |
| Model | 428 | Roadmaster |
| Year Released | 1970 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 5731 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 298 HP | 177 HP |
| Engine RPM | 4600 RPM | 4200 RPM |
| Torque | 640 Nm | 393 Nm |
| Torque RPM | 2800 RPM | 2400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1840 kg |
| Vehicle Length | 4430 mm | 5280 mm |
| Vehicle Width | 1710 mm | 2040 mm |
| Vehicle Height | 1310 mm | 1650 mm |
| Wheelbase Size | 2450 mm | 2950 mm |
