1991 Porsche 964 vs. 1989 Chevrolet Astro
To start off, 1991 Porsche 964 is newer by 2 year(s). Which means there will be less support and parts availability for 1989 Chevrolet Astro. In addition, the cost of maintenance, including insurance, on 1989 Chevrolet Astro would be higher. At 4,293 cc (6 cylinders), 1989 Chevrolet Astro is equipped with a bigger engine. In terms of performance, 1991 Porsche 964 (261 HP @ 6100 RPM) has 78 more horse power than 1989 Chevrolet Astro. (183 HP @ 4400 RPM). In normal driving conditions, 1991 Porsche 964 should accelerate faster than 1989 Chevrolet Astro. With that said, vehicle weight also plays an important factor in acceleration. 1989 Chevrolet Astro weights approximately 690 kg more than 1991 Porsche 964.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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, 1989 Chevrolet Astro (338 Nm @ 2800 RPM) has 20 more torque (in Nm) than 1991 Porsche 964. (318 Nm @ 4800 RPM). This means 1989 Chevrolet Astro will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 964.
Compare all specifications:
| 1991 Porsche 964 | 1989 Chevrolet Astro | |
| Make | Porsche | Chevrolet |
| Model | 964 | Astro |
| Year Released | 1991 | 1989 |
| Engine Position | Rear | Front |
| Engine Size | 3600 cc | 4293 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | boxer | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 261 HP | 183 HP |
| Engine RPM | 6100 RPM | 4400 RPM |
| Torque | 318 Nm | 338 Nm |
| Torque RPM | 4800 RPM | 2800 RPM |
| Engine Bore Size | 100.1 mm | 101.6 mm |
| Engine Stroke Size | 76.4 mm | 88.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1205 kg | 1895 kg |
| Vehicle Length | 4260 mm | 4830 mm |
| Vehicle Width | 1660 mm | 1980 mm |
| Vehicle Height | 1330 mm | 1910 mm |
| Wheelbase Size | 2280 mm | 2830 mm |
