Manley 39572H BBC 572 Rotating Assembly 4.250" Stroke x 4.625" Bore +43cc Dome

The Manley 39572H is a complete Big Block Chevy (BBC) 572 cubic inch rotating assembly engineered for high-performance and competition engine builds. Featuring a 4.250-inch stroke and 4.625-inch bore with +43cc dome pistons, this kit delivers the displacement and dynamic balance needed to support serious horsepower goals.

Key Features:

• 4340 Forged Steel Crankshaft — precision-forged for exceptional strength and durability under high-stress conditions
• 4340 Forged Steel H-Beam Connecting Rods — fitted with 7/16 in. ARP 8740 cap screws, rated to 900 hp for Big Block applications
• Optional ARP 2000 Cap Screws — upgrade path available for builds targeting up to 1,500 hp
• 2618 Forged Aluminum Platinum Series Pistons — +43cc dome configuration to optimize compression ratio in the BBC 572 application
• Premium Chrome Moly Wrist Pins — high-strength pins matched to the 2618 forged piston alloy
• Total Seal Piston Rings — included for a complete, ready-to-assemble rotating assembly
• Clevite "H" Series Rod Bearings and "P" or "H" Series Main Bearings — narrow-profile racing bearings for superior oil film and load capacity
• 572 Cubic Inches of Displacement — 4.250 in. stroke paired with 4.625 in. bore for maximum BBC cubic inch potential

Manley rotating assemblies are purpose-built for performance enthusiasts and professional engine builders who demand reliability at elevated power levels. All components are matched and designed to work together, simplifying the assembly process while ensuring proper fit and balance. This kit is ideal for high-output street, strip, or competition BBC builds.