Manley 29516RHX Big Block Chevy Rotating Assembly Stroke Bore - 516ci 4.000 4.530

The Manley 29516RHX is a complete high-performance rotating assembly engineered for Big Block Chevy applications, delivering 516 cubic inches with a 4.000-inch stroke and 4.530-inch bore configuration. This comprehensive kit provides everything needed to build a bulletproof bottom end capable of serious horsepower.

Complete Assembly Includes:

• 4340 forged steel lightweight crankshaft with 4.000-inch stroke
• 4340 forged steel H-beam connecting rods with 7/16-inch ARP 8740 cap screws
• 2618 forged aluminum Platinum Series pistons with premium chromoly wrist pins
• High-performance piston rings
• Clevite "H" Series narrowed rod bearings
• Clevite "HX" Series main bearings with .001-inch extra clearance for enhanced oil flow

Premium Crankshaft Features:

• Non-twist 4340 steel forging for superior strength
• Multi-step heat treatment process with nitriding for added durability
• Stress relieved, shot peened, and 100% magnafluxed
• Micro-polished large radius journals
• Internal balance design

This rotating assembly is rated for 900 horsepower with the included ARP 8740 cap screws, or up to 1,500 horsepower when upgraded to optional ARP 2000 cap screws. The "RHX" designation indicates this kit includes premium Clevite bearings with optimized clearances - standard "H" Series narrowed rod bearings and "HX" Series main bearings with an additional .001-inch clearance for high-performance applications requiring enhanced oil flow.

Note: Designed for standard deck Big Block Chevy blocks. Not intended for use with highly boosted Roots-style cog belt driven superchargers. Assembly is factory balanced to within +/- 1% of bobweight.