Eagle 35730L4560 Heavy Duty Rotating Assembly 8-Cylinder 4.560" Bore Unbalanced

The Eagle 35730L4560 is a Heavy Duty rotating assembly engineered for Chevrolet 8-cylinder big block applications running a 4.560" bore and 4.250" stroke. Built for the most extreme competition environments, this unbalanced kit delivers the strength and reliability required for high-boost, heavy nitrous, and exotic fuel applications.

Key Features:

• Forged 4340 Steel Crankshaft — Center-counterweighted design for superior strength and reduced rotating mass
• Forged H-Beam Connecting Rods — Built to withstand extreme cylinder pressures; compatible with ARP 2000 or L19 bolt upgrades
• Heavy Duty Forged Pistons — Engineered specifically for high boost and high-nitrous applications at a 4.560" bore diameter
• Premium Bearings Included — King or Clevite rod and main bearings suited to the intended application
• Rings Included — Ring set selected to match the application's performance demands
• Unbalanced Assembly — Must be balanced by a qualified machine shop prior to installation; allows your builder to balance to exact specifications

As an unbalanced assembly, the Eagle 35730L4560 does not include a harmonic damper or flexplate. Professional balancing by a certified machine shop is required before installation. This kit is designed for the Chevrolet 502 big block (10.2" deck, 1-piece rear main seal) platform and is ideal for engine builders seeking a complete, high-performance bottom-end solution for drag racing, circle track, or extreme street/strip builds.