Tractor Pulling: Engines Unleashed (Library Binding) (ISBN-13: 9798348041113)

Tractor pulling is the world's most powerful motorsport. Drivers compete to pull heavy loads across a dirt track. If more than one driver completes the pull, they add on more weight. Explore how drivers modify their trucks and tractors to hold multiple engines, increase wheel speeds, and more. Learn about the history of this exciting motorsport and its rules.