Eagle B18321L030 Street Strip Rotating Assembly Big Block Chevy - 454

The Eagle B18321L030 is a balanced Street & Strip rotating assembly designed for big block Chevrolet 454 engines. This complete assembly provides excellent performance and reliability for street and moderate performance applications producing under 500 horsepower.

Complete Assembly Includes:

• Cast steel crankshaft with 4.250-inch stroke for increased displacement
• Eagle SIR forged 5140 steel I-beam connecting rods at 6.385-inch center-to-center length
• ARP 8740 7/16-inch capscrew bolts for superior rod strength and reliability
• Forged aluminum pistons with dome configuration for optimal compression
• Plasma-moly piston rings for improved sealing and durability
• Premium bearings (King or Clevite brand) for main and rod journals
• Pioneer harmonic damper and flexplate (external balance components)

Key Features:

• Factory balanced assembly - ready to install with no additional balancing required
• Cast steel crankshaft with .092-inch fillet radiuses for improved strength over OEM cranks
• Shot-peened connecting rod surfaces for enhanced fatigue resistance
• External balance configuration for big block Chevrolet applications
• Designed for 2-piece rear seal engines

This Street & Strip rotating assembly offers an affordable solution for engine rebuilds and performance upgrades. All components are manufactured to exacting specifications and balanced as a complete unit for smooth operation and extended engine life.