Eagle Chevrolet LS3 4340 4.00in Stroke Forged Crankshaft

What you get in this Eagle Pro Street rotating assembly is a complete package built for serious performance. Inside this box, you'll find a 4.000-inch stroke forged 4140 crankshaft, ready to handle the demands of a high-performance LS3 engine. It also includes 6.125-inch long 4340 I-beam connecting rods, paired with 7/16-inch ARP 8740 bolts for a strong and reliable connection. For the pistons, Eagle includes forged 4032 DSS flat-top pistons with a -5cc dish, designed for a 4.075-inch bore, and they come with plasma-moly file-fit rings to ensure a good seal. Finally, the assembly is rounded out with King XP rod and main bearings, known for their durability under load.

This rotating assembly is specifically put together for naturally-aspirated racing applications. The use of 4340 forged steel for the crankshaft and connecting rods means these components are well-built and can withstand the higher stresses found in racing engines compared to cast components. The 4032 forged pistons are a good choice for performance builds as they offer better thermal expansion characteristics than 2618 pistons, making them suitable for tighter piston-to-wall clearances and improved sealing, especially with the plasma-moly file-fit rings. The inclusion of ARP bolts for the connecting rods is a notable detail, as these are a popular upgrade for their strength and reliability in high-RPM applications. The 58-tooth reluctor wheel is standard for most LS3 applications, ensuring compatibility with your engine management system.

When putting together a performance LS3, a strong rotating assembly is the heart of the build. This Eagle Pro Street kit gives you the core components needed to build a powerful, naturally-aspirated engine. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions for proper assembly and torque specifications to ensure the longevity and performance of your new engine components.