Eagle Chevy LS3 4.000in Crank 24 Tth Reluctor 6.125in H-Beam -25cc 4.065in Pistons Rotating Assembly

This is the Eagle Chevy LS3 4.000-inch crankshaft, 6.125-inch H-beam connecting rod, and -25cc 4.065-inch piston rotating assembly, part number 129064065. It's built for Chevy LS3 engines and is designed to handle the demands of a performance rebuild or upgrade. This assembly includes a forged crankshaft, forged H-beam connecting rods, and forged pistons, all balanced and ready for installation. The 24-tooth reluctor wheel is standard for most LS3 applications, ensuring compatibility with your engine's computer system.

The forged steel crankshaft features a 4.000-inch stroke, which is a common choice for increasing displacement and torque in LS3 engines. Paired with the 6.125-inch forged H-beam connecting rods, this setup offers a strong and reliable foundation for your engine build. H-beam rods are well-known for their strength and ability to withstand higher horsepower and RPMs compared to I-beam designs. The included pistons are forged aluminum with a -25cc dish volume, designed to achieve a specific compression ratio with the LS3 cylinder heads and the 4.000-inch stroke crank. The 4.065-inch bore size is standard for many LS3 builds, and these pistons are precision-machined for a proper fit within the cylinder walls.

This rotating assembly comes balanced, which is a critical step for smooth engine operation and longevity, especially in high-performance applications. Balancing reduces vibration and stress on engine bearings and other components. While this assembly is a robust choice for performance builds, please note that it is not CARB approved and cannot be shipped to California. Always consult with your engine builder or a qualified mechanic to ensure this assembly meets the specific requirements of your project and to confirm any additional components needed for installation, such as bearings, rings, and gaskets.