Continental W-670-9A (License built Wright Whirlwind) Radial Engine Specifications:

Number of Cylinders : 7
Displacement: 670 ci
Bore: 5.125 inches
Stroke: 5.625 inches
Compression Ratio: 5.4:1
Aspiration: Stromberg Carburetor
Fuel: 65 octane gasoline
Weight: 460lbs
Length: 31 inches
Diameter: 42 inches
Output: 225hp at 2,200rpm
First Used : 1934
Vehicles used on: M2 Light Tank, M3 Stuart Tank, LTV-4 Water Buffalo, Boeing Stearman, Fairchild P-23, G-Class Blimps, Waco 240-A
Cost: $