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

The Manley 39582HXX is a complete Big Block Chevy (BBC) rotating assembly engineered for high-displacement, high-horsepower street and race engine builds. Displacing 582 cubic inches via a 4.375-inch stroke and 4.600-inch bore, this all-Manley kit delivers the strength and precision required for serious performance applications. This version ships unbalanced, requiring external balancing prior to installation.

Kit Components & Specifications:

• Crankshaft: 4340 forged steel crankshaft (P/N 190320) — 4.375" stroke, standard deck blocks with center counterweights, Clevite series main bearing compatibility
• Connecting Rods: 4340 forged steel H-Beam connecting rods (P/N 14066) — 6.535" center-to-center length, 7/16" ARP 8740 cap screws standard (ARP 2000 optional upgrade)
• Pistons: 2618 forged aluminum Platinum Series dome pistons (P/N 698280) — 4.600" bore diameter, +43cc dome volume, lateral gas ported, with premium Chrome Moly wrist pins
• Bearings: Clevite series rod and main bearings included
• Displacement: 582 CID
• Connecting Rod Length: 6.535"
• Piston Dome Volume: +43cc

Compression Ratios (approximate, varies by head chamber volume):

• 15.30:1 with 112cc head
• 14.40:1 with 118cc head
• 13.50:1 with 124cc head

Horsepower Capability:

• Up to 900 HP with standard ARP 8740 rod bolts
• Up to 1,500 HP with optional ARP 2000 rod bolt upgrade

Designed for standard deck Big Block Chevy blocks with center counterweights, the 39582HXX rotating assembly pairs seamlessly with most open-chamber BBC cylinder heads. Professional balancing is required before installation. This kit is ideal for drag race, street/strip, and high-output marine or oval track BBC builds seeking a fully forged, matched rotating assembly from a single trusted manufacturer.