1977 GMC Suburban vs. 1966 Holden HD
To start off, 1977 GMC Suburban is newer by 11 year(s). Which means there will be less support and parts availability for 1966 Holden HD. In addition, the cost of maintenance, including insurance, on 1966 Holden HD would be higher. At 4,093 cc (6 cylinders), 1977 GMC Suburban is equipped with a bigger engine. In terms of performance, 1966 Holden HD (122 HP @ 4600 RPM) has 21 more horse power than 1977 GMC Suburban. (101 HP @ 3600 RPM) In normal driving conditions, 1966 Holden HD should accelerate faster than 1977 GMC Suburban. With that said, vehicle weight also plays an important factor in acceleration. 1977 GMC Suburban weights approximately 1000 kg more than 1966 Holden HD.
Because 1977 GMC Suburban is four wheel drive (4WD), it will have significant more traction and grip than 1966 Holden HD. In wet, icy, snow, or gravel driving conditions, 1977 GMC Suburban 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, 1977 GMC Suburban (242 Nm @ 1600 RPM) has 5 more torque (in Nm) than 1966 Holden HD. (237 Nm @ 2200 RPM). This means 1977 GMC Suburban will have an easier job in driving up hills or pulling heavy equipment than 1966 Holden HD.
Compare all specifications:
| 1977 GMC Suburban | 1966 Holden HD | |
| Make | GMC | Holden |
| Model | Suburban | HD |
| Year Released | 1977 | 1966 |
| Engine Position | Front | Front |
| Engine Size | 4093 cc | 2930 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 101 HP | 122 HP |
| Engine RPM | 3600 RPM | 4600 RPM |
| Torque | 242 Nm | 237 Nm |
| Torque RPM | 1600 RPM | 2200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 2200 kg | 1200 kg |
| Vehicle Length | 5480 mm | 4580 mm |
| Vehicle Width | 1950 mm | 1790 mm |
| Vehicle Height | 1800 mm | 1510 mm |
| Wheelbase Size | 3300 mm | 2700 mm |
