Eagle Chevy Big Block 396/427 Stock Stroke Forged Crankshaft

This is an Eagle forged 4340 steel crankshaft, specifically designed for Chevy Big Block 396 and 427 engines with a stock stroke. If you're building or rebuilding a high-performance Big Block, a strong crankshaft is the foundation of your engine, handling the immense forces generated with every combustion cycle. This Eagle crank is built to handle those demands, offering a solid starting point for serious engine builds.

Eagle starts with a non-twist forging of 4340 steel, a material known for its strength and durability, which is crucial for handling the power of a big displacement V8. They've also incorporated .125" fillet radii, which are chamfered and narrowed to accept specific bearings, adding to the overall robustness of the crank. To further enhance its resilience and wear resistance, this crankshaft receives a nitrided surface treatment and a micropolished finish. This combination helps it withstand the rigors of demanding applications, ensuring longevity and consistent performance under stress.

When installing this crankshaft, remember that the .125" fillet radii mean you'll need to use chamfered or narrowed bearings. It's always best to consult your engine build manual or a trusted mechanic for specific installation procedures and recommended bearing clearances to ensure optimal performance and durability for your Chevy Big Block.