Eagle Chevy 454 4.000in Crank 6.135in H-Beam 43cc Dome 4.350in Pistons Balanced Assembly

If you're building a high-performance Chevy 454 engine for racing, especially with nitrous or forced induction, a balanced rotating assembly is a critical starting point. This assembly from Eagle takes the guesswork out of matching components, ensuring everything works together smoothly for maximum power and reliability under demanding conditions.

At its core is a forged 4.000-inch stroke crankshaft made from strong 4340 steel, built to handle significant stress. Connecting this to the pistons are 6.135-inch H-beam connecting rods, which are known for their robust design and ability to withstand high loads. These rods come with 7/16-inch ARP 8740 bolts, a popular choice for their strength and reliability in performance applications. The pistons are forged 2618 aluminum from Icon, featuring a 43cc dome and a 4.350-inch bore size, designed to work with the crank and rods for a balanced setup. This assembly also includes plasma-moly file-fit piston rings, which allow for precise gap setting to match your specific engine build, and King XP rod and main bearings, offering improved performance and durability.

This is a fully balanced assembly, meaning the crankshaft, connecting rods, pistons, rings, bearings, and harmonic balancer (if included in the specific kit, check packaging) have been precisely weighted and balanced together at the factory. This crucial step reduces engine vibration and stress on other components, leading to a smoother running engine and potentially longer life for your build. Keep in mind this assembly is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for installation details and any specific requirements for your build.