SBC 4340 Forged Crank - 3.480 Stroke - L/W

The EAGLE SBC 4340 Forged Crank with 3.480 stroke and lightweight design is a premium crankshaft engineered for high-performance small block Chevy engine builds. Built from 4340 forged steel and internally balanced, this crankshaft delivers the strength and precision required for competitive racing, street performance, and heavy-duty engine applications where reliability under sustained high RPM operation is non-negotiable.

The 3.480-inch stroke is a popular choice for small block Chevy builders seeking a balance between displacement and component compatibility with standard small block configurations. The forged 4340 steel construction provides superior strength compared to cast alternatives, critical for handling increased cylinder pressures from modern fuel and forced-induction applications. The lightweight design reduces rotating mass, improving throttle response and allowing the engine to reach peak RPM more efficiently. Internal balancing simplifies installation and ensures smooth operation across the entire RPM range. The two-piece seal configuration offers reliable oil containment at both the front and rear of the crankshaft, minimizing seal leakage during extended track sessions or street driving.

This crankshaft is engineered for engine builders and performance enthusiasts rebuilding small block Chevy engines for racing, restorations, or performance street applications. The 3.480 stroke is compatible with standard small block deck heights and rod lengths, making it a straightforward specification for engine builders familiar with small block Chevy architecture. Weighing 54 lbs, it is lighter than cast alternatives while maintaining the durability demanded by high-performance builds. The EAGLE SBC 4340 Forged Crank represents a proven choice for builders prioritizing reliability and performance in competitive and demanding engine builds.