Eagle Chevy 4.8/5.3 LS 4.000in Crank 24 Tth Rlctor 6.125in I-Beam 3.780in Pistons Balanced Assembly

If you're rebuilding the heart of your Chevy 4.8 or 5.3 LS engine for naturally-aspirated racing, this balanced rotating assembly from Eagle is a solid foundation. It bundles together the critical components that work together to create power, all balanced and ready for installation. This assembly is designed to handle the demands of racing applications where every part needs to perform reliably.

This Pro Street assembly starts with a 4.000-inch forged 4140 crankshaft, chosen for its strength and durability under high stress. It includes a 24-tooth reluctor wheel, essential for proper engine management on LS platforms. The connecting rods are 6.125-inch long, made from strong 4340 I-beam forgings and secured with 7/16-inch ARP 8740 bolts, known for their reliability in performance builds. The pistons are forged 4032 DSS with an inverted dome design, measuring 3.780 inches in bore diameter, and come with plasma-moly file-fit rings for a good seal. To ensure smooth operation and longevity, the assembly includes King XP rod and main bearings.

This is a complete, balanced rotating assembly, meaning the crankshaft, connecting rods, pistons, rings, and bearings have been precisely weighted and balanced at the factory. This saves you a significant amount of machine shop time and ensures the engine runs smoothly and with less vibration. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures.