1970 Pontiac GTO vs. 1966 Pontiac GTO
To start off, 1970 Pontiac GTO is newer by 4 year(s). Which means there will be less support and parts availability for 1966 Pontiac GTO. In addition, the cost of maintenance, including insurance, on 1966 Pontiac GTO would be higher. At 7,460 cc (8 cylinders), 1970 Pontiac GTO is equipped with a bigger engine. In terms of performance, 1966 Pontiac GTO (366 HP @ 5200 RPM) has 6 more horse power than 1970 Pontiac GTO. (360 HP @ 4300 RPM) In normal driving conditions, 1966 Pontiac GTO should accelerate faster than 1970 Pontiac GTO. With that said, vehicle weight also plays an important factor in acceleration. 1970 Pontiac GTO weights approximately 315 kg more than 1966 Pontiac GTO.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 1970 Pontiac GTO (678 Nm @ 2700 RPM) has 103 more torque (in Nm) than 1966 Pontiac GTO. (575 Nm @ 3600 RPM). This means 1970 Pontiac GTO will have an easier job in driving up hills or pulling heavy equipment than 1966 Pontiac GTO.
Compare all specifications:
| 1970 Pontiac GTO | 1966 Pontiac GTO | |
| Make | Pontiac | Pontiac |
| Model | GTO | GTO |
| Year Released | 1970 | 1966 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 7460 cc | 6375 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 360 HP | 366 HP |
| Engine RPM | 4300 RPM | 5200 RPM |
| Torque | 678 Nm | 575 Nm |
| Torque RPM | 2700 RPM | 3600 RPM |
| Engine Bore Size | 105.4 mm | 103.1 mm |
| Engine Stroke Size | 106.9 mm | 95.3 mm |
| Engine Compression Ratio | 10.3:1 | 10.8:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1715 kg | 1400 kg |
| Vehicle Length | 5160 mm | 5250 mm |
| Vehicle Width | 1950 mm | 1900 mm |
| Vehicle Height | 1340 mm | 1380 mm |
| Wheelbase Size | 2850 mm | 2930 mm |
