1965 AC 427 vs. 1976 Holden Sunbird
To start off, 1976 Holden Sunbird is newer by 11 year(s). Which means there will be less support and parts availability for 1965 AC 427. In addition, the cost of maintenance, including insurance, on 1965 AC 427 would be higher. At 6,997 cc (8 cylinders), 1965 AC 427 is equipped with a bigger engine. In terms of performance, 1965 AC 427 (410 HP @ 4000 RPM) has 306 more horse power than 1976 Holden Sunbird. (104 HP @ 4000 RPM). In normal driving conditions, 1965 AC 427 should accelerate faster than 1976 Holden Sunbird. With that said, vehicle weight also plays an important factor in acceleration. 1965 AC 427 weights approximately 252 kg more than 1976 Holden Sunbird. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 1965 AC 427 (652 Nm @ 3700 RPM) has 428 more torque (in Nm) than 1976 Holden Sunbird. (224 Nm @ 2400 RPM). This means 1965 AC 427 will have an easier job in driving up hills or pulling heavy equipment than 1976 Holden Sunbird.
Compare all specifications:
| 1965 AC 427 | 1976 Holden Sunbird | |
| Make | AC | Holden |
| Model | 427 | Sunbird |
| Year Released | 1965 | 1976 |
| Engine Position | Front | Front |
| Engine Size | 6997 cc | 2832 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 410 HP | 104 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 652 Nm | 224 Nm |
| Torque RPM | 3700 RPM | 2400 RPM |
| Drive Type | Rear | Rear |
| Vehicle Weight | 1397 kg | 1145 kg |
| Vehicle Length | 4430 mm | 4500 mm |
| Vehicle Width | 1710 mm | 1710 mm |
| Vehicle Height | 1300 mm | 1340 mm |
| Wheelbase Size | 2440 mm | 2590 mm |
