Eagle 12321000 Competition Rotating Assembly Small Block Chevy

The Eagle 12321000 Competition Rotating Assembly delivers race-proven performance for high-output small block Chevrolet engines. Engineered for serious racing applications including nitrous oxide and forced induction, this complete rotating assembly combines premium components designed to handle extreme cylinder pressures and high RPM operation.

At the heart of this kit is a forged 4340 steel crankshaft with a 3.000-inch stroke, offering exceptional strength and durability under demanding conditions. The crankshaft features center counterweights for optimal balance and reduced vibration. Paired with this are Eagle's forged H-beam connecting rods measuring 5.700 inches center-to-center, secured with 7/16-inch ARP 8740 bolts for superior clamping force and reliability.

The assembly includes forged 4032 aluminum ICON pistons with a 4.000-inch bore diameter and -4.9cc flat top design, providing excellent strength-to-weight ratio and thermal expansion characteristics ideal for high-performance applications. Plasma-moly file-fit piston rings are included for precise end gap fitting, ensuring optimal sealing and oil control. King XP series rod and main bearings round out the package, providing race-quality bearing surfaces with enhanced load capacity.

Key Features:

• Forged 4340 steel crankshaft with 3.000-inch stroke
• Forged H-beam connecting rods, 5.700-inch length
• 7/16-inch ARP 8740 rod bolts for maximum strength
• Forged 4032 aluminum ICON flat top pistons, 4.000-inch bore
• -4.9cc piston dome for compression ratio flexibility
• Plasma-moly file-fit piston rings
• King XP series rod and main bearings
• Ideal for racing, nitrous, and forced induction applications

Important Installation Notes: This rotating assembly requires professional balancing by a qualified machine shop before installation. All components should be checked and clearances verified during assembly. Proper torque specifications must be followed for all fasteners.