Eagle 11421L100 Big Block Chevy 496 Competition Rotating Assembly Unbalanced

The Eagle 11421L100 is a high-performance competition rotating assembly designed for Big Block Chevy 496 cubic inch stroker builds with 1-piece rear main seal configuration (Gen VI). This unbalanced kit is engineered to support engine builds up to 900 horsepower and features premium forged components throughout.

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 dome pistons with +23cc dome and performance ring set
• High-performance rod and main bearings

Key Specifications:

• Fits short deck 9.800-inch block height
• Compression ratios: 10.8:1 with 112cc chambers, 10.3:1 with 118cc chambers, 9.8:1 with 124cc chambers
• Upgraded rod bolts rated to support 1200+ horsepower
• Unbalanced assembly - internal balancing required before installation (for balanced version, see part number B11421L)

This competition-grade rotating assembly delivers the strength and reliability needed for serious street performance and racing applications. All components are precision-matched and test-fitted to ensure optimal performance and durability.