Eagle Chevy 400 3.750in Crank 5.700in I-Beam Rods -30cc 4.155in Pistons Rotating Assembly

This Eagle Street & Strip Rotating Assembly gives you the core components to rebuild or upgrade your Chevy 400 engine. Inside this package, you'll find a 3.750-inch cast crankshaft, a set of 5.700-inch 5140 I-beam connecting rods equipped with 3/8-inch ARP 8740 bolts, and hypereutectic KB pistons with an inverted dome design measuring 4.155 inches in diameter and a -30cc volume. It also includes plasma-moly file-fit piston rings and King SI rod and main bearings to get your bottom end assembled.

This assembly is specifically designed for street vehicles running on pump gas and naturally aspirated setups. The 5140 I-beam rods are well-built for the demands of street driving, and the ARP bolts ensure a strong connection between the rod and crank. The hypereutectic pistons are a solid choice for this application, offering good durability for everyday use. The included file-fit rings allow for precise gap setting to match your specific cylinder wall finish and application, which is a common practice for performance engine builds. King bearings are known for their reliability in street performance applications.

When assembling this rotating assembly, pay close attention to the piston ring gap setting, as the file-fit rings require careful measurement and filing to ensure proper sealing and performance. This assembly is intended for naturally aspirated, pump gas street applications and is not CARB approved, meaning it cannot be shipped to California. Always consult your engine building manual or a trusted professional for detailed assembly procedures and torque specifications.