Eagle Standard Forged 4340 Chromoly Steel

This product is an Eagle Standard Forged 4340 Chromoly Steel Crankshaft, designed for Ford 4.6L Modular V8 engines. It features a 3.750-inch stroke and 1.889-inch rod journals, making it a robust component for engine builds.

Eagle constructs this crankshaft from forged 4340 steel, known for its strength and durability, especially under high stress. It utilizes a non-twist forging process and includes center counterweights to enhance stability, which is crucial for maintaining performance at high RPMs and in high-power applications. The crankshaft also features 0.125-inch fillet radii for added strength, meaning chamfered or narrowed bearings are required for installation. To further improve its resilience and performance, the surface is nitrided and micropolished, providing a hard, wear-resistant finish that also ensures smooth operation.

This crankshaft is intended for demanding applications where reliability and performance are paramount. Ensure you have the correct chamfered or narrowed bearings, as specified by the manufacturer, for proper installation and optimal function.