Eagle B42104041 Balanced Rotating Assembly Big Block Chevy Stroke - 454 4.250

The Eagle B42104041 is a complete balanced rotating assembly designed for Chevrolet Big Block 454 engines with a 4.165" bore. This Street & Strip rotating assembly delivers reliable performance for engines producing up to 500 horsepower, combining quality components with professional balancing for smooth operation right out of the box.

Complete Assembly Includes:

• 4.250" cast steel crankshaft with improved fillet radiuses for enhanced strength
• 6.735" H-Beam connecting rods with 7/16" ARP 8740 bolts for superior durability
• Forged 4032 aluminum Icon pistons with -14.4cc inverted dome design
• Plasma-moly file-fit piston rings for excellent sealing and longevity
• King SI performance rod and main bearings
• Professional balancing completed by Eagle - ready to install

Key Features:

• Factory balanced assembly - no additional balancing required
• Cast steel crankshaft provides excellent strength-to-weight ratio
• H-Beam rods offer superior strength over I-Beam designs
• ARP 8740 bolt material ensures reliable rod cap retention
• Forged pistons deliver durability for demanding applications
• Inverted dome piston design optimizes compression characteristics

This rotating assembly is designed for internal balance applications and provides an excellent foundation for street performance, weekend racing, and high-performance street machines. The 4.250" stroke combined with proper bore sizing delivers strong torque and responsive power across the RPM range.