Eagle B11421L060 Big Block Chevy Competition Rotating Assembly - 496 Kit

The Eagle B11421L060 is a pro-grade competition rotating assembly designed for high-performance Big Block Chevy 496 cubic inch builds. This assembly is engineered to support engines producing up to 900 horsepower, making it an excellent choice for serious street performance and racing applications.

Complete Assembly 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 configuration
• Premium performance piston ring set
• High-performance rod and main bearings

Important Installation Note: This rotating assembly kit is unbalanced and requires internal balancing before installation. For a pre-balanced version, see part number B11421L060 (with "B" prefix). The 496 configuration is created by boring a 454 block .060-inch oversize and adding a 4.250-inch stroke crankshaft, producing approximately 496 cubic inches of displacement.

Eagle Specialty Products is known for manufacturing high-strength engine components with superior surface finishes that promote better oil flow and reduced wear. This assembly features premium forged 4340 steel construction throughout the crankshaft and connecting rods for maximum strength and durability in demanding applications.