Manley 38565RX BBC 565 Rotating Assembly Kit 4.250" Stroke 4.600" Bore -3cc Flat Top

The Manley 38565RX is a complete rotating assembly kit engineered for the Chevy Big Block (BBC) producing 565 cubic inches of displacement. Built around a 4.250" stroke and 4.600" bore, this kit is designed for standard deck blocks and is factory balanced to within +/- 1% of bobweight — ready to drop into your build with confidence.

Kit Includes:

• 4340 forged steel lightweight crankshaft — 4.250" stroke, multi-step heat treated and nitrided for maximum strength and durability
• 4340 forged steel H-Beam connecting rods — 6.385" center-to-center length with 7/16" ARP 8740 cap screws (rated to 900 hp); upgrade to ARP 2000 cap screws for up to 1,500 hp
• 2618 forged aluminum Platinum Series pistons — -3cc flat top design with premium chrome moly wrist pins
• Total Seal high-performance piston rings
• Clevite "H" Series rod bearings (narrowed) and "P" Series main bearings

Key Specifications:

• Engine Family: Chevy Big Block (BBC)
• Displacement: 565 CID (9.3L)
• Stroke: 4.250"
• Bore: 4.600"
• Connecting Rod Length: 6.385" (center to center)
• Piston Head Volume: -3cc (flat top)
• Rear Main Seal: 2-piece
• Block Compatibility: Standard deck
• Balance: Factory balanced to +/- 1% of bobweight
• Horsepower Range: 900 hp (ARP 8740) / up to 1,500 hp (optional ARP 2000 cap screws)

The Manley 38565RX rotating assembly delivers a proven foundation for serious Big Block Chevy performance builds, combining premium forged components and factory-matched bearings into a single comprehensive kit that streamlines the engine building process.