Manley 39582RX BBC Rotating Assembly Stroke Bore Dome - 582 4.375 4.600 43cc

The Manley 39582RX is a complete Big Block Chevy (BBC) 582 cubic inch rotating assembly engineered for high-output street and race applications. Built around a 4.375-inch stroke and 4.600-inch bore, this kit delivers the displacement foundation needed for serious power production, with a horsepower capability ranging from 900 HP to 1,500 HP depending on fastener selection.

Kit Includes:

• 4340 Forged Steel Crankshaft – 4.375" stroke, heat treated and stress relieved for maximum durability
• 4340 Forged Steel H-Beam Connecting Rods – 6.535" length, fitted with 7/16" ARP 8740 cap screws standard (ARP 2000 optional for higher HP builds)
• 2618 Forged Aluminum Platinum Series Pistons – +43cc dome configuration, 4.600" bore size, designed for high-compression BBC applications
• Premium Chrome Moly Wrist Pins – Included with pistons for precision fit and durability
• High Performance Piston Rings – Included
• Clevite® H-Series Rod Bearings (narrowed) and Main Bearings – Included

Key Specifications:

• Displacement: 582 cu. in. (Big Block Chevy)
• Stroke: 4.375 in.
• Bore Size: 4.600 in.
• Connecting Rod Length (center-to-center): 6.535 in.
• Piston Dome Volume: +43cc
• Deck Height: 9.800 in.
• Horsepower Rating: Up to 900 HP (ARP 8740) / Up to 1,500 HP (ARP 2000)

Manley rotating assemblies are precision-matched from the factory, taking the guesswork out of bottom-end assembly. The 39582RX suffix denotes inclusion of the optional ARP 2000 rod bolts, making this kit ideal for forced induction or nitrous-assisted builds targeting higher power levels. Note: This assembly is supplied unbalanced — professional balancing is recommended prior to installation.