Eagle Chevy LS1 4.000in Crank 58 Tth Reluctor 6.125in I-Beam Rods 3.900in Pistons Rotating Assembly

This Eagle Pro Street rotating assembly gives you the core components to rebuild or upgrade your Chevy LS1 engine. You get a 4.000-inch forged 4140 crankshaft, a 58-tooth reluctor wheel, 6.125-inch 4340 I-beam connecting rods with 7/16-inch ARP 8740 bolts, and 3.900-inch forged 4032 DSS pistons with an inverted dome design. It also includes plasma-moly file-fit piston rings and King XP rod and main bearings to get you started.

This assembly is built for naturally-aspirated racing applications, meaning it’s designed to handle the demands of high-RPM operation without forced induction. The forged 4140 crankshaft and 4340 I-beam rods are strong choices for performance builds, offering good durability. The 4032 forged pistons are a popular option for their strength and thermal expansion characteristics, which are well-suited for performance engines. The included King XP bearings are known for their robust construction and ability to handle increased loads.

When installing this rotating assembly, ensure all components are properly cleaned and balanced according to manufacturer specifications. The file-fit piston rings mean you'll need to gap them to your specific cylinder bore and application, a common practice for performance engines to ensure optimal sealing and ring-to-wall clearance. This assembly is a solid foundation for a performance LS1 build, but remember it is not CARB approved and cannot be shipped to California.