Manley 39615HX BBC CID Rotating Assembly Stroke Bore Dome - 615 4.625 4.600 43cc

The Manley 39615HX is a complete high-compression Big Block Chevy rotating assembly engineered for serious performance builds targeting 615 cubic inches of displacement. Featuring a 4.625-inch stroke and 4.600-inch bore, this kit is precision internally balanced in-house by Manley and requires a 10.200-inch deck block. The HX designation specifies the high-compression 43cc dome piston configuration paired with upgraded ARP 2000 rod bolts rated to 1,500 hp.

Kit Includes:

• Manley 4340 forged steel crankshaft — 4.625-inch stroke; heat treated, stress relieved, shot peened, nitrided, and 100% Magnafluxed
• Manley 6.700-inch H-beam connecting rods — forged 4340 steel; heat treated, stress relieved, shot peened, nitrided, and 100% Magnafluxed; fitted with 7/16-inch ARP 2000 cap screws (1,500 hp rating)
• Manley 2618 Platinum Series forged aluminum pistons — 4.600-inch bore, 1.185-inch compression height, 43cc dome
• Manley premium chromoly wrist pins
• Total Seal piston rings — 1/16-inch, 1/16-inch, 3/16-inch
• Clevite "H" Series narrowed rod bearings and "P" or "H" Series main bearings

Key Specifications:

• Actual Engine Displacement: 615 CID (10.1L)
• Stroke: 4.625 in.
• Bore: 4.600 in. (115.824 mm)
• Rod Length: 6.700 in.
• Piston Dome Volume: +43cc
• Rear Main Seal Style: 2-piece
• Balance: Internally balanced
• Required Deck Height: 10.200 in.

Every component in the Manley 39615HX rotating assembly undergoes rigorous quality control, including multi-step heat treatment and 100% Magnaflux inspection, ensuring reliability in demanding street and racing applications. This is a purpose-built kit for engine builders who demand maximum displacement, high compression, and long-term durability from their Big Block Chevy build.