1972 AMC Javelin SST 4.2 vs. 1972 AMC Javelin AMX 4.9
To start off, both 1972 AMC Javelin SST 4.2 and 1972 AMC Javelin AMX 4.9 were released in the same year (1972). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,982 cc (8 cylinders), 1972 AMC Javelin AMX 4.9 is equipped with a bigger engine. In terms of performance, 1972 AMC Javelin AMX 4.9 (151 HP @ 4200 RPM) has 41 more horse power than 1972 AMC Javelin SST 4.2. (110 HP @ 3500 RPM) In normal driving conditions, 1972 AMC Javelin AMX 4.9 should accelerate faster than 1972 AMC Javelin SST 4.2. With that said, vehicle weight also plays an important factor in acceleration. 1972 AMC Javelin AMX 4.9 weights approximately 108 kg more than 1972 AMC Javelin SST 4.2. 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, 1972 AMC Javelin AMX 4.9 (332 Nm @ 2500 RPM) has 68 more torque (in Nm) than 1972 AMC Javelin SST 4.2. (264 Nm @ 2000 RPM). This means 1972 AMC Javelin AMX 4.9 will have an easier job in driving up hills or pulling heavy equipment than 1972 AMC Javelin SST 4.2. 1972 AMC Javelin SST 4.2 has automatic transmission and 1972 AMC Javelin AMX 4.9 has manual transmission. 1972 AMC Javelin AMX 4.9 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1972 AMC Javelin SST 4.2 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1972 AMC Javelin SST 4.2 | 1972 AMC Javelin AMX 4.9 | |
| Make | AMC | AMC |
| Model | Javelin | Javelin |
| Year Released | 1972 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 4228 cc | 4982 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 110 HP | 151 HP |
| Engine RPM | 3500 RPM | 4200 RPM |
| Torque | 264 Nm | 332 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Engine Bore Size | 95.2 mm | 95.2 mm |
| Engine Stroke Size | 99 mm | 87.3 mm |
| Engine Compression Ratio | 8.0:1 | 8.4:1 |
| Top Speed | 156 km/hour | 164 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1342 kg | 1450 kg |
| Vehicle Length | 4880 mm | 4880 mm |
| Vehicle Width | 1920 mm | 1920 mm |
| Vehicle Height | 1300 mm | 1300 mm |
| Wheelbase Size | 2800 mm | 2800 mm |
| Fuel Tank Capacity | 60 L | 60 L |
