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What does 5.4L 3-valve SOHC V8 mean?

5.4L: This refers to the engine displacement, which is 5.4 liters.

3-valve: This means that each cylinder has three valves: two intake valves and one exhaust valve.

SOHC: This stands for Single Overhead Camshaft, which means that there is one camshaft located in the cylinder head that controls the opening and closing of the valves.

V8: This means that the engine has a V-shaped configuration with eight cylinders arranged in two banks.