1975 AC 428 vs. 2003 Hummer H2
To start off, 2003 Hummer H2 is newer by 28 year(s). Which means there will be less support and parts availability for 1975 AC 428. In addition, the cost of maintenance, including insurance, on 1975 AC 428 would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 2003 Hummer H2 (321 HP @ 5200 RPM) has 23 more horse power than 1975 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2003 Hummer H2 should accelerate faster than 1975 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 2003 Hummer H2 weights approximately 1480 kg more than 1975 AC 428. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Hummer H2 is four wheel drive (4WD), it will have significant more traction and grip than 1975 AC 428. In wet, icy, snow, or gravel driving conditions, 2003 Hummer H2 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, 1975 AC 428 (639 Nm @ 2800 RPM) has 117 more torque (in Nm) than 2003 Hummer H2. (522 Nm @ 3600 RPM). This means 1975 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 2003 Hummer H2. 2003 Hummer H2 has automatic transmission and 1975 AC 428 has manual transmission. 1975 AC 428 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Hummer H2 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1975 AC 428 | 2003 Hummer H2 | |
| Make | AC | Hummer |
| Model | 428 | H2 |
| Year Released | 1975 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 5967 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 298 HP | 321 HP |
| Engine RPM | 4600 RPM | 5200 RPM |
| Torque | 639 Nm | 522 Nm |
| Torque RPM | 2800 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1430 kg | 2910 kg |
| Vehicle Length | 4430 mm | 4820 mm |
| Vehicle Width | 1710 mm | 2070 mm |
| Vehicle Height | 1310 mm | 1980 mm |
| Wheelbase Size | 2450 mm | 3130 mm |
