What Ford V8 engine powered the 1967 GT40 Mark IV?

“What Ford V8 engine powered the 1967 GT40 Mark IV?” — It was Ford’s 427 FE V8.

The Mark IV used a 427-cubic-inch version of Ford’s FE-series big-block V8. The engine displaced about 7.0 litres and gave Ford the large-capacity power needed for high-speed endurance racing, particularly on the long Mulsanne Straight at Le Mans.

The Mark IV was developed from Ford’s J-Car program rather than being a simple continuation of the earlier British-built GT40 designs. Its advanced chassis and aerodynamic body were paired with the proven 427 powerplant, while Kar-Kraft handled major construction and development work in the United States.

At the 1967 24 Hours of Le Mans, Dan Gurney and A. J. Foyt drove a GT40 Mark IV to victory. The result gave Ford its second straight overall Le Mans win. The 427 FE name can be confusing because “427” describes displacement, while “FE” identifies Ford’s engine family; it is not the same engine as Ford’s later 460-series V8.