Manley 38615R Big Block Chevy Rotating Assembly Stroke Bore - 615ci 4.625 4.600 3cc

The Manley 38615R is a complete Big Block Chevrolet rotating assembly kit engineered for serious high-performance and racing applications. Displacing approximately 615 cubic inches, this kit pairs a 4.625" stroke crankshaft with components sized for a 4.600" bore and features -3cc dome pistons to deliver exceptional compression and power output from a tall-deck BBC platform.

Kit Highlights:

• Application: Big Block Chevrolet (tall deck)
• Displacement: ~615 cubic inches
• Stroke: 4.625 inches
• Bore: 4.600 inches
• Piston Dome: -3cc (flat-to-slight dome)
• Crankshaft: 4340 forged steel, heat treated, stress relieved, shot peened, nitrided, and 100% Magnaflux inspected
• Connecting Rods: 4340 forged steel H-beam or I-beam rods with ARP 2000 cap screws ("R" designation)
• Pistons: Manley forged performance pistons matched to 4.600" bore
• Rings: High-performance piston rings included
• Bearings: High-performance Clevite® "H" Series rod (narrowed) and main engine bearings

Manley rotating assemblies are factory balanced to within +/- 1% of bobweight, reducing the time and cost of engine assembly. The micro-polished, large-radius journals promote reduced friction and extended bearing life. Note: 4.500"–4.750" stroke kits are designed for tall deck blocks. Manley crankshafts are not intended for use with highly boosted roots-style cog belt superchargers.

The "R" suffix confirms this kit is equipped with ARP 2000 cap screws, supporting horsepower levels up to approximately 1,500 HP, making the 38615R an ideal foundation for extreme street, strip, and race BBC builds.