Crankshafts are a critical, central component of any engine. Strength and durability are important traits of a great crankshaft. GM Performance Parts crankshafts are precision-engineered to be both strong and durable. GM Performance Parts understands how catastrophic crankshaft failure can be, so that's why its crankshafts are manufactured to such exacting specifications and tested to withstand the forces of high-performance engines. These crankshafts are the same tough parts used in GM Performance Parts crate engines.