Eagle Pontiac 455 4.500in Stroke 2.200in Rod Journals Forged 4340 Steel Crankshaft

Eagle is well-known for building strong rotating assemblies for performance engines. This forged 4340 steel crankshaft is designed for Pontiac 455 applications where durability and strength are paramount. It features a 4.500-inch stroke and 2.200-inch rod journals, making it a solid choice for engine builds that need to handle significant power.

This crankshaft starts with a non-twist forging process, which helps ensure its structural integrity under stress. The .125-inch fillet radii are chamfered or narrowed to accept specific bearings, a detail that contributes to its overall strength. The surface is nitrided and then micropolished, a treatment that hardens the exterior for improved wear resistance while the micropolishing ensures smooth operation and helps maintain oil film.

When you're building an engine that needs to perform under demanding conditions, the crankshaft is a critical component. This Eagle crankshaft is built to meet those challenges. Because of the .125" fillet radii, you will need to use chamfered or narrowed bearings to ensure proper fitment and function. Always refer to the manufacturer's installation instructions for detailed guidance on bearing selection and assembly procedures.