1991 Buick Roadmaster vs. 1978 Datsun 260Z
To start off, 1991 Buick Roadmaster is newer by 13 year(s). Which means there will be less support and parts availability for 1978 Datsun 260Z. In addition, the cost of maintenance, including insurance, on 1978 Datsun 260Z would be higher. At 5,731 cc (8 cylinders), 1991 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 1991 Buick Roadmaster (177 HP @ 4200 RPM) has 14 more horse power than 1978 Datsun 260Z. (163 HP @ 5600 RPM). In normal driving conditions, 1991 Buick Roadmaster should accelerate faster than 1978 Datsun 260Z. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 740 kg more than 1978 Datsun 260Z. 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, 1991 Buick Roadmaster (393 Nm @ 2400 RPM) has 180 more torque (in Nm) than 1978 Datsun 260Z. (213 Nm @ 4400 RPM). This means 1991 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 1978 Datsun 260Z.
Compare all specifications:
| 1991 Buick Roadmaster | 1978 Datsun 260Z | |
| Make | Buick | Datsun |
| Model | Roadmaster | 260Z |
| Year Released | 1991 | 1978 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 2565 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 177 HP | 163 HP |
| Engine RPM | 4200 RPM | 5600 RPM |
| Torque | 393 Nm | 213 Nm |
| Torque RPM | 2400 RPM | 4400 RPM |
| Engine Compression Ratio | 8.0:1 | 8.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1840 kg | 1100 kg |
| Vehicle Length | 5280 mm | 4135 mm |
| Vehicle Width | 2040 mm | 1630 mm |
| Vehicle Height | 1650 mm | 1290 mm |
| Wheelbase Size | 2950 mm | 2310 mm |
| Fuel Tank Capacity | 75 L | 60 L |
