1954 Alvis TC 21 vs. 1999 GMC Sierra
To start off, 1999 GMC Sierra is newer by 45 year(s). Which means there will be less support and parts availability for 1954 Alvis TC 21. In addition, the cost of maintenance, including insurance, on 1954 Alvis TC 21 would be higher. At 4,784 cc (6 cylinders), 1999 GMC Sierra is equipped with a bigger engine. In terms of performance, 1999 GMC Sierra (267 HP @ 5200 RPM) has 167 more horse power than 1954 Alvis TC 21. (100 HP @ 4000 RPM) In normal driving conditions, 1999 GMC Sierra should accelerate faster than 1954 Alvis TC 21. With that said, vehicle weight also plays an important factor in acceleration. 1999 GMC Sierra weights approximately 365 kg more than 1954 Alvis TC 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1954 Alvis TC 21. In wet, icy, snow, or gravel driving conditions, 1999 GMC Sierra 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, 1999 GMC Sierra (386 Nm @ 4000 RPM) has 165 more torque (in Nm) than 1954 Alvis TC 21. (221 Nm @ 2000 RPM). This means 1999 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1954 Alvis TC 21.
Compare all specifications:
| 1954 Alvis TC 21 | 1999 GMC Sierra | |
| Make | Alvis | GMC |
| Model | TC 21 | Sierra |
| Year Released | 1954 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4784 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 100 HP | 267 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 221 Nm | 386 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1440 kg | 1805 kg |
| Vehicle Length | 4630 mm | 5170 mm |
| Vehicle Width | 1680 mm | 2000 mm |
| Vehicle Height | 1580 mm | 1810 mm |
| Wheelbase Size | 2840 mm | 3030 mm |
