1999 GMC Sierra vs. 1977 Pontiac Grand Safari
To start off, 1999 GMC Sierra is newer by 22 year(s). Which means there will be less support and parts availability for 1977 Pontiac Grand Safari. In addition, the cost of maintenance, including insurance, on 1977 Pontiac Grand Safari would be higher. At 4,942 cc (8 cylinders), 1977 Pontiac Grand Safari is equipped with a bigger engine. In terms of performance, 1999 GMC Sierra (267 HP @ 5200 RPM) has 129 more horse power than 1977 Pontiac Grand Safari. (138 HP @ 3600 RPM). In normal driving conditions, 1999 GMC Sierra should accelerate faster than 1977 Pontiac Grand Safari. With that said, vehicle weight also plays an important factor in acceleration. 1977 Pontiac Grand Safari weights approximately 65 kg more than 1999 GMC Sierra.
Because 1999 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1977 Pontiac Grand Safari. In wet, icy, snow, or gravel driving conditions, 1999 GMC Sierra 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, 1999 GMC Sierra (386 Nm @ 4000 RPM) has 67 more torque (in Nm) than 1977 Pontiac Grand Safari. (319 Nm @ 2000 RPM). This means 1999 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1977 Pontiac Grand Safari. 1977 Pontiac Grand Safari has automatic transmission and 1999 GMC Sierra has manual transmission. 1999 GMC Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1977 Pontiac Grand Safari will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 GMC Sierra | 1977 Pontiac Grand Safari | |
| Make | GMC | Pontiac |
| Model | Sierra | Grand Safari |
| Year Released | 1999 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 4784 cc | 4942 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 267 HP | 138 HP |
| Engine RPM | 5200 RPM | 3600 RPM |
| Torque | 386 Nm | 319 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Vehicle Weight | 1805 kg | 1870 kg |
| Vehicle Length | 5170 mm | 5450 mm |
| Vehicle Width | 2000 mm | 2020 mm |
| Vehicle Height | 1810 mm | 1460 mm |
| Wheelbase Size | 3030 mm | 2950 mm |
