Eagle Chevy LS1 4.000in Crank 58 Tth Reluctor 6.125in I-Beam Rods 3.898in Pistons Rotating Assembly

If you're building a naturally-aspirated LS1 engine for racing, this Eagle Pro Street rotating assembly is a solid foundation. It includes a forged crankshaft, connecting rods, pistons, rings, and bearings, all balanced and ready to go. This assembly is designed to handle the demands of performance street and track use where forced induction isn't part of the plan.

The heart of this assembly is a 4.000-inch stroke forged 4140 crankshaft, providing the foundation for increased displacement and torque. Paired with it are 6.125-inch long 4340 I-beam connecting rods, known for their strength and reliability in performance applications. These rods use 7/16-inch ARP 8740 bolts, a trusted name in high-strength fasteners, ensuring a secure connection under stress. The pistons are forged 4032 DSS flat-tops with a -5cc dish, designed for a 3.898-inch bore, and come with plasma-moly file-fit rings. This combination is chosen for its durability and ability to work well with various cylinder head combinations. King XP rod and main bearings are included, offering improved performance and wear resistance for the critical rotating components.

This assembly is balanced and ready for installation, simplifying the engine building process. It's important to 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 to ensure the longevity of your new engine build.