Eagle Chevy 400 3.750in Crank 5.700in I-Beam Rods -20cc 4.165in Pistons Rotating Assembly

This Eagle Street & Strip rotating assembly gives you the core components to build a strong Chevy 400 engine. You get a 3.750-inch cast crankshaft, 5.700-inch I-beam connecting rods fitted with 3/8-inch ARP 8740 bolts, and forged 4.165-inch Mahle pistons with an inverted dome design that creates a -20cc volume. This assembly also includes plasma-moly file-fit piston rings and King rod and main bearings, providing a solid foundation for your engine build.

Designed for pump gas, naturally aspirated street applications, this assembly is a well-built choice for those looking to put together a reliable engine. The Mahle pistons are forged from 4032 aluminum, known for its strength and good thermal expansion properties, which helps them perform well under typical street driving conditions. The inclusion of ARP bolts for the connecting rods signifies a commitment to durability, as ARP fasteners are well-regarded in the performance engine world. The file-fit piston rings allow for precise gapping to match your specific cylinder wall finish and bore size, which is crucial for proper sealing and oil control.

When assembling this rotating group, pay close attention to the piston ring gap specifications, as these are file-fit and require careful measurement and adjustment to ensure optimal performance and longevity. The King bearings are also a solid choice, offering good performance for street applications. Remember that this assembly is not CARB approved and cannot be shipped to California. It's a robust package for anyone building a Chevy 400 for street use.