Manley 38572RX BBC Rotating Assembly Stroke Bore Flat Top Pistons - 572 4.250 4.625 3cc

The Manley 38572RX is a complete, precision-balanced rotating assembly engineered for Chevrolet Big Block (BBC) 572 cubic inch stroker builds. Designed for 9.800" standard deck height aftermarket blocks, this kit pairs a 4.250" stroke 4340 forged steel crankshaft with 4.625" bore, -3cc flat-top 2618 forged aluminum Platinum Series pistons for a low-compression street/strip configuration — ideal for naturally aspirated, power-adder, or nitrous-assisted applications.

Every component in this assembly has been heat treated, stress relieved, shot peened, nitrided, and 100% magnaflux inspected. The kit is precision internally balanced by Manley in-house before shipping, so it arrives ready for engine assembly.

Kit Includes:

• Crankshaft: Manley 4340 non-twist lightweight forged steel, 4.250" stroke — heat treated, stress relieved, shot peened, nitrided, and magnafluxed
• Connecting Rods: Manley 4340 forged steel H-beam, 6.385" length — with 7/16" ARP 2000 cap screws (rated to 1,500 hp); heat treated, stress relieved, shot peened, nitrided, and magnafluxed
• Pistons: Manley 2618 forged aluminum Platinum Series, 4.625" bore, 1.395" compression height, -3cc flat-top (P/N 696390)
• Wrist Pins: Manley premium chromoly wrist pins
• Piston Rings: Total Seal 1/16" – 1/16" – 3/16" file-fit piston rings
• Bearings: Clevite "H" Series high-performance rod (narrowed) and main bearings

Key Specifications:

• Engine Family: Chevrolet Big Block (BBC)
• Displacement: 572 cubic inches
• Stroke: 4.250"
• Bore: 4.625"
• Rod Length: 6.385"
• Piston Dome/Dish: -3cc Flat Top
• Compression Height: 1.395"
• Deck Height Required: 9.800"
• Rod Bolt: ARP 2000 (1,500 hp rated)
• Balance: Internally balanced (precision balanced by Manley)

The Manley 38572RX rotating assembly is an ideal foundation for a high-output BBC 572 stroker engine, delivering the quality and precision that professional engine builders and performance enthusiasts demand.