Eagle 138154065 LS3 Competition Rotating Assembly 4.000" Stroke 4.065" Bore 416 CI

The Eagle 138154065 Competition Rotating Assembly is engineered for ultimate performance and reliability in demanding LS3, L92, and L99 engine applications. This complete assembly delivers exceptional strength for engines producing up to 750+ horsepower and is designed to handle extreme conditions including nitrous oxide, turbocharging, and supercharging.

High-Quality Components:

• Forged 4340 steel crankshaft with 4.000" stroke and 24-tooth reluctor wheel
• Forged 4340 steel H-beam connecting rods with 6.125" center-to-center length
• 7/16" ARP 8740 chromoly rod bolts for superior clamping force
• Forged 2618 or 4032 aluminum pistons (typically -4cc to -25cc dish or flat top design)
• Premium plasma-moly piston ring set with optimized ring gaps
• High-performance King or Clevite rod and main bearings

Specifications:

• Displacement: 415-416 cubic inches (based on 4.065" bore)
• Stroke: 4.000"
• Rod Length: 6.125"
• Bore Size: 4.065" (standard LS3 bore)
• Reluctor Configuration: 24-tooth (58-tooth versions also available)
• Balance: Fully internally balanced assembly

This competition-grade rotating assembly is recommended for serious racing applications and power-adder builds. The forged 4340 steel crankshaft provides exceptional strength and durability, while the H-beam connecting rods offer an optimal strength-to-weight ratio. Designed as a direct replacement for LS3, L92, L99, and LS9 engines with 4.065" standard bore.

Note: Verify reluctor tooth count and cylinder head chamber volume before ordering to ensure proper compression ratio and ignition timing compatibility. Professional installation and balancing verification recommended.