Pontiac 455 4030 Forged Crank - 4.250 Stroke

The EAGLE Pontiac 455 4030 Forged Crank with 4.250 inch stroke is a purpose-built crankshaft engineered for high-performance Pontiac V8 engine builds. This forged steel component delivers the rotating assembly foundation necessary for serious power applications, from street performance to competition environments where durability under high RPM and increased load is non-negotiable.

The 4.250 inch stroke specification directly influences engine displacement and torque characteristics—longer strokes generate increased leverage on the connecting rods, translating to greater low-end and mid-range torque output compared to shorter-stroke alternatives. Internal balancing eliminates the need for external counterweights, streamlining the rotating assembly and reducing parasitic drag. The forged steel construction provides superior strength and fatigue resistance compared to cast iron, essential for engine builds operating at elevated boost pressures, nitrous oxide systems, or sustained high-RPM operation. The two-piece rear seal design accommodates modern seal technology while maintaining OEM-compatible installation geometry.

This crankshaft is specified for serious Pontiac V8 engine rebuilds and performance restorations where factory components no longer meet power output demands. Whether for vintage muscle car restoration, street performance upgrades, or drag racing applications, the forged construction and internal balance specifications make this unit suitable for builders targeting reliable power increases without compromising engine longevity. EAGLE's manufacturing reputation in the rotating assembly market positions this component as a trusted choice for Pontiac engine specialists and performance builders seeking OEM-compatible, aftermarket-quality crankshafts.