1977 GMC Jimmy vs. 1991 Mazda RX-7
To start off, 1991 Mazda RX-7 is newer by 14 year(s). Which means there will be less support and parts availability for 1977 GMC Jimmy. In addition, the cost of maintenance, including insurance, on 1977 GMC Jimmy would be higher. At 4,093 cc (6 cylinders), 1977 GMC Jimmy is equipped with a bigger engine. In terms of performance, 1991 Mazda RX-7 (197 HP @ 6500 RPM) has 97 more horse power than 1977 GMC Jimmy. (100 HP @ 3600 RPM) In normal driving conditions, 1991 Mazda RX-7 should accelerate faster than 1977 GMC Jimmy. With that said, vehicle weight also plays an important factor in acceleration. 1977 GMC Jimmy weights approximately 500 kg more than 1991 Mazda RX-7.
Because 1977 GMC Jimmy is four wheel drive (4WD), it will have significant more traction and grip than 1991 Mazda RX-7. In wet, icy, snow, or gravel driving conditions, 1977 GMC Jimmy will offer significantly more control. 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 Mazda RX-7 (271 Nm @ 3500 RPM) has 28 more torque (in Nm) than 1977 GMC Jimmy. (243 Nm @ 1600 RPM). This means 1991 Mazda RX-7 will have an easier job in driving up hills or pulling heavy equipment than 1977 GMC Jimmy. 1977 GMC Jimmy has automatic transmission and 1991 Mazda RX-7 has manual transmission. 1991 Mazda RX-7 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1977 GMC Jimmy will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1977 GMC Jimmy | 1991 Mazda RX-7 | |
| Make | GMC | Mazda |
| Model | Jimmy | RX-7 |
| Year Released | 1977 | 1991 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4093 cc | 2616 cc |
| Engine Type | in-line | dual-disk rotary |
| Horse Power | 100 HP | 197 HP |
| Engine RPM | 3600 RPM | 6500 RPM |
| Torque | 243 Nm | 271 Nm |
| Torque RPM | 1600 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Vehicle Weight | 1800 kg | 1300 kg |
| Vehicle Length | 4690 mm | 4320 mm |
| Vehicle Width | 2030 mm | 1700 mm |
| Vehicle Height | 1840 mm | 1270 mm |
| Wheelbase Size | 2720 mm | 2440 mm |
