Eagle Chevy 409 4.000in Crank 6.135in H-Beam 89.1cc Dome 4.380in Pistons Balanced Assembly

This Eagle balanced rotating assembly starts with a 4.000-inch stroke crankshaft, a solid foundation for building a powerful Chevy 409 engine. The H-beam connecting rods measure 6.135 inches long, chosen for their strength and ability to handle increased cylinder pressures. Paired with these are 4.380-inch dome pistons, designed to work with the 89.1cc combustion chamber volume to achieve a specific compression ratio suitable for performance applications.

Eagle has balanced this entire assembly, which is a critical step for any performance engine build. Proper balancing reduces vibration and stress on bearings, leading to a smoother running engine and improved longevity. This attention to detail means you can spend less time at the balancing shop and more time on the road or track. The H-beam rod design is well-known for its robust construction, offering a strong connection between the piston and crankshaft, capable of withstanding the demands of a performance engine.

When undertaking a significant engine build like this, it's important to note that this assembly is not CARB approved and cannot be shipped to California. Ensure you have all the necessary supporting components for your engine build, as this is a core rotating assembly designed for custom performance applications.