Eagle Chevy 427 3.766in Crank 6.135in I-Beam Rods 41cc Dome 4.350in Pistons Balanced Assembly

If you're building a high-performance Chevy 427 engine, especially for naturally-aspirated racing, this balanced rotating assembly from Eagle is a solid foundation. It's designed to handle the demands of serious performance builds, giving you the core components needed to get your engine rotating with confidence.

This assembly starts with a forged 4340 steel crankshaft featuring a 3.766-inch stroke, paired with strong 6.135-inch 4340 I-beam connecting rods. These rods are secured with robust 7/16-inch ARP 8740 bolts, known for their reliability under stress. The pistons are forged 4032 aluminum from Icon, featuring a 4.350-inch bore and a 41cc dome to achieve a specific compression ratio, which is crucial for naturally-aspirated applications. The assembly also includes plasma-moly file-fit piston rings, allowing for precise gap setting to match your engine's bore and intended use, and King XP series rod and main bearings for smooth operation and durability.

This rotating assembly comes balanced from the factory, which is a critical step for any performance engine build. Proper balancing reduces vibration, leading to a smoother running engine, less stress on components, and ultimately, improved longevity. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. Always consult your engine builder or refer to manufacturer specifications for precise installation and compatibility details.