Eagle Chevy 400 Small Block Forged Internally Balanced Crankshaft

Eagle has built a solid reputation for making strong, reliable engine parts, especially for performance builds. This particular crankshaft is forged from 4340 steel, a material known for its toughness and ability to handle high stress, making it a good choice for serious engine work. It's designed specifically for the Chevy 400 Small Block engine and features an internally balanced design, which simplifies the balancing process for your build. The crankshaft has a 3.875-inch stroke, giving you more displacement from your 400 Small Block. Eagle uses a non-twist forging process for added strength and includes .125-inch fillet radii, which are chamfered or narrowed to accept specific bearings, further increasing its robustness. The surface is nitrided and micropolished for improved durability and smoother operation.

When you're putting together a high-performance engine, the crankshaft is the backbone. This Eagle forged crankshaft is built to withstand the demands of powerful engines. The 4340 steel construction means it can handle increased cylinder pressures and RPMs. The nitriding process hardens the surface, providing excellent resistance to wear, while the micropolishing ensures a smooth finish for reduced friction and better oil flow to the bearings. Because it's internally balanced, you'll want to ensure your rotating assembly (pistons, rods, and flexplate/flywheel) is also balanced to match, or have the entire assembly professionally balanced. This is a critical component for anyone rebuilding or upgrading a Chevy 400 Small Block for performance applications.