Eagle B18021100 Balanced Rotating Assembly Kit Chevy BBC 454 489ci Stroker

The Eagle B18021100 is a complete balanced rotating assembly designed for Chevrolet big block 454 engines. This street and strip performance kit increases displacement to 489 cubic inches through its longer stroke crankshaft, delivering improved torque and horsepower output for muscle cars, street rods, and performance trucks.

Complete Assembly Includes:

• 4.250-inch cast steel crankshaft with enhanced fillet radiuses for added strength
• 6.385-inch Eagle SIR I-beam connecting rods with 7/16-inch ARP 8740 capscrew bolts
• Hypereutectic aluminum KB pistons with -3cc flat top design for 4.350-inch bore
• Plasma-moly piston rings with file-fit installation
• King or Clevite rod and main bearings
• Pioneer harmonic damper and flexplate (externally balanced assemblies)

Key Features:

• Factory balanced by Eagle - ready to install with no additional balancing required
• Designed for engines producing up to 500 horsepower
• Cast steel crankshaft with .092-inch fillet radiuses for superior strength over OEM
• 2-piece rear main seal configuration
• External balance design (42.5 oz. imbalance)
• Complete kit includes all necessary bearings and rings

This rotating assembly offers excellent value for street performance and weekend strip use, combining quality Eagle components with reliable hypereutectic pistons and premium ARP fasteners. Perfect for upgrading classic Chevrolet big block applications including Chevelles, Corvettes, Camaros, and C10/C20 trucks.