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

If you're building a high-performance Chevy 427 engine for naturally-aspirated racing, a balanced rotating assembly is a critical starting point. This Eagle Pro Street assembly is designed to handle the demands of serious competition, providing a solid foundation for your build.

This assembly features a forged 4340 steel crankshaft with a 3.766-inch stroke, paired with strong 6.135-inch H-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 41cc dome to achieve a specific compression ratio, and they measure 4.350 inches in diameter. For optimal ring seal and performance, the assembly includes plasma-moly file-fit rings, allowing you to precisely gap them for your application. King XP series rod and main bearings are included, offering excellent durability and performance for the rotating assembly.

This rotating assembly comes balanced from the factory, saving you a significant step and ensuring smooth operation. Please note that this assembly is not CARB approved and cannot be shipped to California. It also carries a Prop 65 warning.