Manley 39615HXX BBC Rotating Assembly Stroke Bore Dome - 615ci 4.625 4.600 43cc

The Manley 39615HXX is a complete Big Block Chevy (BBC) 615 CID rotating assembly engineered for serious high-compression performance builds. Designed around a tall-deck (10.200") block, this kit delivers a 4.625-inch stroke, 4.600-inch bore, and 6.700-inch rod length with +43cc dome pistons — all precision internally balanced in-house at Manley for immediate drop-in reliability.

Kit Specifications:

• Displacement: 615 CID (Big Block Chevy)
• Stroke: 4.625 in.
• Bore Size: 4.600 in.
• Rod Length: 6.700 in.
• Piston Dome Volume: +43cc
• Crankshaft: Manley 4340 non-twist lightweight forged steel
• Connecting Rods: 4340 forged steel H-beam with 7/16" ARP 8740 cap screws (ARP 2000 optional)
• Pistons: 2618 forged aluminum Platinum Series with premium chrome moly wrist pins
• Balance: Precision internally balanced by Manley
• Horsepower Range: Up to 900 HP (ARP 8740) / Up to 1,500 HP (with optional ARP 2000 hardware)

The HXX suffix denotes the high-compression, extra-clearance tall-deck specification, making this assembly ideal for race and high-performance street engines demanding maximum displacement and elevated compression ratios. Every Manley rotating assembly is built to exacting tolerances, ensuring each component works in harmony for long-term durability under extreme power levels.