Eagle Specialty Products 12004030 Competition Rotating Assembly CID Small Block Chevy - 355

The Eagle Specialty Products 12004030 Competition Rotating Assembly is engineered for high-performance small block Chevy builds, delivering 355 cubic inches of displacement. This complete rotating assembly is designed for demanding racing applications including nitrous oxide and forced-induction systems, providing the strength and reliability needed for competition use.

Complete Assembly Includes:

• Forged 4340 steel crankshaft with 3.480-inch stroke
• 6.000-inch H-beam connecting rods with 7/16-inch ARP 8740 bolts
• Forged 2618 aluminum pistons with 11cc dome, 4.030-inch bore
• Plasma-moly file-fit piston rings
• King XP high-performance rod and main bearings

Key Features:

• 355 CID displacement (3.480-inch stroke x 4.030-inch bore)
• Premium forged 4340 crankshaft for maximum strength
• H-beam rods with ARP high-strength fasteners
• Forged pistons built for extreme conditions
• High-performance King XP bearing package
• Designed for internal balance configuration

Important Notes: This is an unbalanced assembly and must be balanced by a qualified machine shop before installation. Suitable for small block Chevrolet 350 engines with 2-piece rear main seal (pre-1986 applications). Eagle Specialty Products is the world's largest aftermarket connecting rod manufacturer, using state-of-the-art equipment and premium materials to produce competition-grade engine components.