1984 Alfa Romeo 33 vs. 1951 Alvis TB 21
To start off, 1984 Alfa Romeo 33 is newer by 33 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 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1984 Alfa Romeo 33 (93 HP @ 5750 RPM) has 2 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM). In normal driving conditions, 1984 Alfa Romeo 33 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 74 more torque (in Nm) than 1984 Alfa Romeo 33. (130 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1984 Alfa Romeo 33.
Compare all specifications:
| 1984 Alfa Romeo 33 | 1951 Alvis TB 21 | |
| Make | Alfa Romeo | Alvis |
| Model | 33 | TB 21 |
| Year Released | 1984 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 1490 cc | 2993 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | boxer | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 93 HP | 91 HP |
| Engine RPM | 5750 RPM | 4000 RPM |
| Torque | 130 Nm | 204 Nm |
| Engine Bore Size | 84.1 mm | 84 mm |
| Engine Stroke Size | 67.2 mm | 90 mm |
| Engine Compression Ratio | 9.0:1 | 7.1:1 |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4150 mm | 4430 mm |
| Vehicle Width | 1620 mm | 1680 mm |
| Wheelbase Size | 2410 mm | 2750 mm |
