Eagle Chevy 454 4.250in Crank 6.385in H-Beam -3cc Flat Top 4.320in Pistons Rotating Assembly

This is the Eagle Chevy 454 Competition Rotating Assembly, a complete package designed for serious engine builds. Inside this kit, you'll find a forged 4340 crankshaft with a 4.250-inch stroke, a set of 6.385-inch H-beam connecting rods equipped with 7/16-inch ARP 8740 bolts, and forged 4032 Mahle pistons. These pistons are a flat-top design with a -3cc dish and measure 4.320 inches in diameter. The assembly also comes with plasma-moly file-fit piston rings and King XP rod and main bearings to get your engine ready for the track.

This rotating assembly is built for the demands of racing, including applications using nitrous oxide or forced induction. The forged 4340 steel crank and H-beam rods are strong choices for high-stress environments, offering improved durability over cast components. The Mahle pistons are forged from 4032 aluminum, which offers good thermal expansion characteristics for a tighter piston-to-wall clearance when the engine is cold, and they are designed to work with the included file-fit rings for a precise seal. The ARP bolts are well-known for their strength and reliability in high-performance applications.

When assembling this rotating group, remember that the included piston rings are file-fit, meaning they need to be gapped to your specific cylinder bore dimensions before installation. This ensures optimal sealing and performance. The King XP bearings are designed for high-load applications, providing robust protection for your crankshaft and connecting rod journals. This assembly is intended for competition use and is not CARB approved, so it cannot be shipped to California.