Eagle Chevy 454 4.250in Counterweight Crank 6.385in H-Beam 44cc 4.320in Pistons Rotating Assembly

If you're building a serious performance Chevy 454 engine for extreme competition, this Eagle rotating assembly is a solid foundation. It's designed to handle the demands of heavy nitrous use, high boost applications, and even exotic fuels, giving you the confidence to push your engine hard.

At the heart of this assembly is a 4.250-inch forged 4340 steel crankshaft featuring center counterweighting. This design helps to balance the rotating mass more effectively, reducing stress on the main bearings and improving overall engine smoothness at high RPMs. Paired with this are 6.385-inch H-beam connecting rods, known for their strength and reliability under high loads. These rods are secured with 7/16-inch ARP L19 bolts, a popular choice for their exceptional clamping force and durability in high-stress environments. The pistons are forged 2618 aluminum from JE, featuring a 44cc dome and a 4.320-inch bore size, designed to work with the crank and rods for optimal compression and performance. This assembly also includes plasma-moly file-fit piston rings, which allow for precise gapping to match your specific cylinder wall finish and intended use, and King XP main and rod bearings, offering robust protection for critical rotating components.

This rotating assembly is a significant upgrade for any high-performance build. Keep in mind that this part is not CARB approved and cannot be shipped to California. It's always a good idea to consult with your engine builder or refer to Eagle's installation guidelines for specific assembly and break-in procedures to ensure the longevity and performance of your new engine.