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

Eagle Specialty Products has built a solid reputation for making strong, reliable engine components for performance builds. This rotating assembly is a prime example, designed to handle the demands of a performance Chevy 409 engine. It includes a 4.000-inch stroke crankshaft, 6.135-inch H-beam connecting rods, and 4.380-inch dome pistons, all balanced and ready to go into your build.

The H-beam connecting rods are well-known for their strength and ability to withstand higher RPMs and increased cylinder pressures compared to I-beam designs. The 4.380-inch dome pistons are designed to work with the 89.1cc combustion chamber volume, helping to achieve a specific compression ratio for your engine's needs. This assembly is balanced, which means the rotating mass has been precisely weighted and matched to reduce vibration and ensure smooth operation at higher engine speeds. This attention to detail is crucial for engine longevity and performance, especially when you're pushing the limits.

This rotating assembly is a significant upgrade for anyone rebuilding or building a performance Chevy 409. It's a foundational piece that sets the stage for a powerful and durable engine. Please note that this assembly is not CARB approved and cannot be shipped to California.