Manley 38555RHXX Big Block Chevy CID Rotating Assembly Stroke Bore Flat Top - 555 4.250 4.560 3cc

The Manley 38555RHXX is a complete rotating assembly kit for Big Block Chevy (BBC) engines, displacing 555 cubic inches with a 4.250" stroke and a 4.560" bore diameter. Featuring -3cc flat-top pistons, this internally balanced stroker kit is precision-assembled in-house by Manley and is engineered for serious street and strip performance builds.

Kit Includes:

• Crankshaft: Manley 4340 non-twist lightweight forged steel crankshaft — 4.250" stroke; heat treated, stress relieved, shot peened, nitrided, and 100% Magnafluxed
• Connecting Rods: Manley 4340 forged steel H-beam rods — 6.385" length; heat treated, stress relieved, shot peened, nitrided, and 100% Magnafluxed; fitted with 7/16" ARP 2000 cap screws (rated to 1,500 hp)
• Pistons: Manley 2618 forged aluminum Platinum Series pistons — 4.560" bore, -3cc flat-top design; with premium chromoly wrist pins
• Rings: Total Seal 1/16" – 1/16" – 3/16" piston ring set
• Bearings: Clevite "H" Series narrowed rod bearings and "H" or "P" Series main engine bearings
• Precision internally balanced by Manley in-house

Key Specifications:

• Engine Family: Big Block Chevy (BBC)
• Displacement: 555 CID
• Stroke: 4.250"
• Bore: 4.560"
• Rod Length: 6.385"
• Piston Head Volume: -3cc (Flat Top)
• Deck Height: 9.800"
• Rod Bolt: ARP 2000 (1,500 hp rated)
• Balance: Internally balanced

The -3cc flat-top piston design produces lower compression ratios suitable for forced induction, nitrous, or high-compression naturally aspirated builds using appropriate cylinder heads. With ARP 2000 rod bolts standard, this assembly is capable of supporting up to 1,500 horsepower, making it an ideal foundation for demanding street, strip, and bracket racing applications.