Final answer:
A V-8 automobile engine has only one crankshaft, a component that coverts pistons' motion into rotational motion to drive the wheels.
Step-by-step explanation:
In a V-8 automobile engine, there is only one crankshaft. Despite the engine having eight cylinders, the crankshaft is a singular long component that spans the bottom of the engine and converts the linear motion of the pistons into rotational motion, which ultimately drives the vehicle's wheels. The 'V-8' designation refers to the engine having eight cylinders arranged in two banks of four, forming a 'V' shape when viewed from the front of the engine, but this does not affect the number of crankshafts in the engine.