Manley 29565HXX Big Block Chevy Rotating Assembly Stroke Bore - 565 4.250 4.600 43cc

The Manley 29565HXX is a complete Big Block Chevy (BBC) 565 cubic inch rotating assembly engineered for high-output street and racing applications. This kit combines a 4.250-inch stroke crankshaft with a 4.600-inch bore and +43cc dome pistons to deliver maximum displacement and compression potential from a BBC platform.

Key Features:

• 4340 forged steel crankshaft — 4.250" stroke, built for strength and durability under high-horsepower conditions
• 4340 forged steel H-beam connecting rods — fully machined, heat treated, stress relieved, shot peened, and magnafluxed
• H-beam rods feature ARP 8740 cap screws standard, with optional ARP 2000 upgrade available
• 2618 forged aluminum Platinum Series pistons — +43cc dome configuration with Premium Chrome Moly wrist pins
• Horsepower range of approximately 900 HP with ARP 8740 fasteners; up to 1,500 HP with optional ARP 2000 cap screws
• Connecting rods are weight matched to ±1.5 grams with big and small end bores final honed to ±0.0002"
• 565 cubic inch displacement achieved via the 4.250" stroke and 4.600" bore combination

Manley Performance has been engineering premium internal engine components since 1966. The 29565HXX rotating assembly is a complete, precision-matched kit designed to simplify the engine build process while delivering race-proven reliability and performance in Big Block Chevy applications.