Pontiac 455 Cast Steel Crank - 4.250 Stroke

The EAGLE Pontiac 455 Cast Steel Crank with 4.250 Stroke is a premium crankshaft engineered for high-performance Pontiac V8 engine builds. Built from cast steel construction, this crankshaft delivers the stroke geometry and internal balance characteristics necessary for serious displacement and power output in classic muscle car applications. The 4.250-inch stroke specification provides the displacement foundation required for building big-inch Pontiac V8 engines, making it a core component for engine builders targeting maximum cubic inches and torque production.

This crankshaft features internal balance design, which distributes rotating mass evenly throughout the assembly and reduces vibration at higher RPMs compared to externally balanced configurations. The 2-piece seal arrangement provides modern sealing capability while maintaining compatibility with traditional Pontiac V8 architecture. At 77 pounds, the casting weight reflects the robust material composition required to handle elevated horsepower and boost loads in forced-induction applications or sustained high-RPM operation. The cast steel material offers proven durability in street and competition environments where thermal cycling and mechanical stress demand reliability.

Engine builders working on Pontiac 455 restorations, street performance builds, and competition engines rely on this crank as a foundation component. The 4.250-inch stroke works in conjunction with standard Pontiac 400 or 455 block architecture, allowing builders to dial in displacement and torque characteristics for their specific application. Whether building a classic muscle car with period-correct proportions or a modern restomod with upgraded fuel injection and ignition, this crankshaft provides the geometric foundation necessary for reliable, high-output performance.