EAGLE 129104030 GM LS-Series 408 CID Rotating Assembly

The EAGLE 129104030 rotating assembly is designed for GM LS-Series engine builds requiring a 408 cubic-inch configuration. This kit combines a forged crankshaft, forged pistons, and 6.125-inch H-beam connecting rods in one coordinated assembly.

With a 4.000-inch stroke and 4.030-inch bore, the assembly provides the core components for building the specified 408 CID combination. The forged crank and pistons are paired with H-beam rods to support a performance-focused engine assembly.

Use the EAGLE part number 129104030 to identify this GM LS-Series rotating assembly when selecting components for a compatible engine build. Review all engine specifications and assembly requirements before installation to ensure the selected components meet the needs of the application.

Features:

• Engine Configuration: GM LS-Series rotating assembly
• Displacement: 408 cubic inches
• Crankshaft: Forged crankshaft
• Pistons: Forged pistons
• Stroke: 4.000 inches
• Bore: 4.030 inches
• Connecting Rods: 6.125-inch H-beam rods
• Brand: EAGLE
• Part Number: 129104030