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

Eagle is well-known for building robust engine components, and this Pro Street rotating assembly is a prime example for your Chevy 409 engine. If you're building a naturally-aspirated race engine, this assembly is designed to handle the demands of competition. It brings together a strong foundation of critical internal engine parts, all balanced and ready for installation.

At the heart of this assembly is a 4.000-inch forged 4340 crankshaft, chosen for its strength and reliability under high stress. Paired with it are 6.135-inch 4340 I-beam connecting rods, secured with 7/16-inch ARP 8740 bolts, which are a popular choice for their durability and ability to hold tight under extreme loads. The pistons are forged 2618 Ross units, measuring 4.372 inches with a .365-inch dome, designed to achieve a 10:1 compression ratio with plasma-moly standard gap rings. This combination is engineered for performance in a racing environment.

This assembly also includes King XP rod and main bearings, known for their good performance and wear resistance in demanding applications. Everything in this kit is intended to work together to form a solid rotating assembly for your performance build. Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and break-in procedures.