Eagle 11421L060 BBC 496 Competition Rotating Assembly Kit Unbalanced

The Eagle 11421L060 is a complete competition-grade rotating assembly designed for Big Block Chevy 496 cubic inch stroker builds. This comprehensive kit delivers exceptional strength and reliability for high-performance street and competition applications rated up to 900 horsepower, with upgraded components capable of supporting 1200+ horsepower builds.

Complete Kit Includes:

• Eagle 4340 forged steel crankshaft with 4.250-inch stroke and 1-piece rear main seal
• Eagle 4340 forged steel H-beam connecting rods, 6.385-inch length with 7/16-inch ARP 8740 rod bolts
• 4032 forged Icon pistons with +23cc dome and performance ring set
• High-performance rod and main bearings

Technical Specifications:

• Displacement: 496 cubic inches (at 4.310-inch bore with 0.060 over)
• Stroke: 4.250 inches
• Rod Length: 6.385 inches
• Piston Type: 4032 forged with +23cc dome
• Compression Ratios: 10.8:1 with 112cc heads, 10.3:1 with 118cc heads, 9.8:1 with 124cc heads
• Application: Gen VI Big Block Chevy, short deck 9.800-inch block

Important Note: This rotating assembly is supplied unbalanced and requires internal balancing by a qualified machine shop before installation. For a pre-balanced version, see part number B11421L.

Built with Eagle's renowned 4340 forged steel components throughout, this kit provides the foundation for a bulletproof big block build. The H-beam rods feature ARP 8740 fasteners for superior clamping force, while the forged Icon pistons deliver durability under extreme cylinder pressures. Ideal for street/strip applications, forced induction, and nitrous oxide systems.