1951 Alvis TB 21 vs. 1964 Porsche 911

To start off, 1964 Porsche 911 is newer by 13 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, 1964 Porsche 911 (129 HP @ 6100 RPM) has 38 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 1964 Porsche 911 should accelerate faster than 1951 Alvis TB 21.

Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 26 more torque (in Nm) than 1964 Porsche 911. (178 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1964 Porsche 911.

Compare all specifications:

1951 Alvis TB 21 1964 Porsche 911
Make Alvis Porsche
Model TB 21 911
Year Released 1951 1964
Engine Position Front Rear
Engine Size 2993 cc 1991 cc
Engine Cylinders 6 cylinders 6 cylinders
Engine Type in-line in-line
Valves per Cylinder 2 valves 2 valves
Horse Power 91 HP 129 HP
Engine RPM 4000 RPM 6100 RPM
Torque 204 Nm 178 Nm
Engine Bore Size 84 mm 80.1 mm
Engine Stroke Size 90 mm 66 mm
Engine Compression Ratio 7.1:1 9.0:1
Fuel Type Gasoline Gasoline
Number of Seats 5 seats 4 seats
Vehicle Length 4430 mm 4170 mm
Vehicle Width 1680 mm 1620 mm
Wheelbase Size 2750 mm 2190 mm


 

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