1951 Alvis TB 21 vs. 1972 Zagato Ferrari 3Z
To start off, 1972 Zagato Ferrari 3Z is newer by 21 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, 1972 Zagato Ferrari 3Z (251 HP @ 7500 RPM) has 160 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1972 Zagato Ferrari 3Z should accelerate faster than 1951 Alvis TB 21.
Compare all specifications:
| 1951 Alvis TB 21 | 1972 Zagato Ferrari 3Z | |
| Make | Alvis | Zagato |
| Model | TB 21 | Ferrari 3Z |
| Year Released | 1951 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2953 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 251 HP |
| Engine RPM | 4000 RPM | 7500 RPM |
| Engine Bore Size | 84 mm | 73.1 mm |
| Engine Stroke Size | 90 mm | 58.8 mm |
| Engine Compression Ratio | 7.1:1 | 9.2:1 |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Length | 4430 mm | 4530 mm |
| Vehicle Width | 1680 mm | 1700 mm |
| Wheelbase Size | 2750 mm | 2410 mm |
