Eagle Chevy 409 4.000in Crank 6.135in I-Beam Rods .365in Dome 4.372in Pistons Balanced Assembly

If you're building a high-performance Chevy 409 engine, a balanced rotating assembly is the foundation for reliable power. This assembly from Eagle is designed to handle serious output, providing a strong, well-matched set of core rotating components that work together seamlessly. It includes a 4.000-inch stroke crankshaft, 6.135-inch I-beam connecting rods, and 4.372-inch dome pistons, all balanced as a complete unit.

Eagle is known for building robust engine components, and this assembly is no exception. The I-beam connecting rods offer a solid balance of strength and weight for performance applications, while the pistons are designed to work with the included crank and rods for optimal cylinder filling and combustion. Having the entire assembly balanced from the factory means you're starting with a rotating assembly that's ready to spin true, reducing vibration and wear on your engine bearings. This is crucial for longevity, especially when you're pushing an engine like the 409 to its limits.

This balanced rotating assembly is a significant step towards a complete engine build. It's important to note that this assembly is not CARB approved and cannot be shipped to California. You'll want to ensure you have all the necessary supporting components, such as bearings, rings, gaskets, and a suitable camshaft, to complete your engine project. Proper installation and break-in procedures are essential for maximizing the performance and lifespan of this high-performance rotating assembly.