Eagle Pontiac 455 4.250in Stroke 2.200in Rod Journals Forged 4340 Steel Crankshaft

If you're building a high-performance Pontiac 455 engine, a strong crankshaft is the heart of the operation. This forged 4340 steel crankshaft from Eagle is built to handle serious power, offering a 4.250-inch stroke and 2.200-inch rod journals. It's designed to be the foundation for an engine that can take a beating and keep performing.

Eagle starts with a non-twist forging of 4340 steel, which is known for its excellent strength and durability. They've added .125-inch fillet radii, which are important for superior strength, meaning you'll need to use chamfered or narrowed bearings with this crank. The surface is nitrided and then micropolished. Nitriding hardens the surface to resist wear, while the micropolishing ensures smooth operation and helps with oil retention. These features combine to create a crankshaft that's ready for demanding builds where reliability is key.

This crankshaft is a substantial component for anyone looking to push the limits of their Pontiac 455. Make sure to consult your engine builder or a trusted mechanic for specific installation requirements, especially regarding bearing selection and balancing, to ensure optimal performance and longevity for your build.