2009 GMC Sierra vs. 1978 Mazda 929
To start off, 2009 GMC Sierra is newer by 31 year(s). Which means there will be less support and parts availability for 1978 Mazda 929. In addition, the cost of maintenance, including insurance, on 1978 Mazda 929 would be higher. At 5,999 cc (8 cylinders), 2009 GMC Sierra is equipped with a bigger engine. In terms of performance, 2009 GMC Sierra (312 HP @ 4400 RPM) has 229 more horse power than 1978 Mazda 929. (83 HP @ 5000 RPM). In normal driving conditions, 2009 GMC Sierra should accelerate faster than 1978 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 2009 GMC Sierra weights approximately 824 kg more than 1978 Mazda 929. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 GMC Sierra (506 Nm @ 4400 RPM) has 372 more torque (in Nm) than 1978 Mazda 929. (134 Nm @ 3000 RPM). This means 2009 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1978 Mazda 929.
Compare all specifications:
| 2009 GMC Sierra | 1978 Mazda 929 | |
| Make | GMC | Mazda |
| Model | Sierra | 929 |
| Year Released | 2009 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 1769 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 312 HP | 83 HP |
| Engine RPM | 4400 RPM | 5000 RPM |
| Torque | 506 Nm | 134 Nm |
| Torque RPM | 4400 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1894 kg | 1070 kg |
| Vehicle Length | 6580 mm | 4410 mm |
| Vehicle Width | 2440 mm | 1670 mm |
| Vehicle Height | 1940 mm | 1420 mm |
| Wheelbase Size | 4250 mm | 2520 mm |
| Fuel Tank Capacity | 129 L | 55 L |
