Eagle Chevy 427/454 3.766in Crank 6.135in I-Beam Rods 4.320in Pistons Rotating Assembly

This Eagle Pro Street rotating assembly gives you the core components for a robust Chevy 427 or 454 engine build. Inside this package, you'll find a 3.766-inch forged 4340 steel crankshaft, ready to handle significant power. Paired with it are 6.135-inch forged 4340 I-beam connecting rods, secured with 7/16-inch ARP 8740 bolts, known for their strength and reliability in performance applications. The assembly also includes forged 4032 aluminum pistons from Icon, featuring a 10.2cc closed chamber dome design and a 4.320-inch bore size, along with plasma-moly file-fit piston rings for a precise seal. To complete the rotating assembly, King XP rod and main bearings are included, offering excellent wear resistance and performance under load.

This assembly is specifically put together for naturally-aspirated racing use, meaning it's built to perform without forced induction like turbos or superchargers. The use of 4340 forged steel for both the crankshaft and connecting rods signifies a well-built component designed for higher stress environments than cast components. The Icon pistons are also forged, offering improved strength and durability over cast pistons, and the closed chamber dome design is optimized for specific compression ratios when paired with the right cylinder heads. The ARP bolts are a notable detail, as they are a popular choice among engine builders for their consistent clamping force and resistance to stretching under high RPM and load.

When building a performance engine, the rotating assembly is the heart of its ability to make power and withstand abuse. This Eagle Pro Street assembly provides a solid foundation with quality components from reputable brands like Eagle, ARP, Icon, and King. Please note that this assembly is not CARB approved and cannot be shipped to California. It's always recommended to consult with your engine builder or refer to manufacturer specifications for optimal installation and tuning to match your specific build goals.