1951 Alvis TB 21 vs. 2007 GMC Sierra
To start off, 2007 GMC Sierra is newer by 56 year(s). Which means there will be less support and parts availability for 1951 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TB 21 would be higher. At 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (300 HP @ 4400 RPM) has 209 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2007 GMC Sierra (488 Nm) has 284 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TB 21.
Compare all specifications:
| 1951 Alvis TB 21 | 2007 GMC Sierra | |
| Make | Alvis | GMC |
| Model | TB 21 | Sierra |
| Year Released | 1951 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 5999 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 300 HP |
| Engine RPM | 4000 RPM | 4400 RPM |
| Torque | 204 Nm | 488 Nm |
| Engine Bore Size | 84 mm | 102 mm |
| Engine Stroke Size | 90 mm | 92 mm |
| Number of Seats | 5 seats | 6 seats |
| Vehicle Length | 4430 mm | 6330 mm |
| Vehicle Width | 1680 mm | 2450 mm |
| Wheelbase Size | 2750 mm | 4010 mm |
