Eagle 11321L070 Big Block Chevy Engine Rotating Assembly Kit - 8-Cylinder

The Eagle Specialty Products 11321L070 is an 8-cylinder engine rotating assembly kit engineered for Chevrolet Big Block applications. Eagle Specialty Products is a leading manufacturer of high-performance rotating assembly components, offering complete kits that bundle a crankshaft, connecting rods, pistons, rings, and bearings into a single, value-driven package purpose-built for performance engine builds.

Eagle rotating assembly kits are test-fitted at the factory to verify proper component fit and function before shipping. Each kit brings together carefully matched components to simplify the engine building process and ensure compatibility across all included parts.

Kit Includes:

• Crankshaft (cast steel or forged, per application)
• Connecting rods — Eagle SIR I-Beam or H-Beam rods depending on configuration
• Pistons with piston pins and locks
• Piston rings (plasma-moly or standard gap, per application)
• Rod and main bearings (King or Clevite)

Key Features:

• Designed for 8-cylinder Chevrolet Big Block engine applications
• Factory-matched components for simplified assembly and verified compatibility
• Available balanced or unbalanced — part numbers beginning with "B" are pre-balanced by Eagle and require no additional machine shop balancing
• Unbalanced assemblies (non-"B" prefix) must be balanced by a qualified machine shop prior to installation
• Externally balanced assemblies balanced by Eagle include a Pioneer harmonic damper and flexplate
• Internally balanced assemblies do not include flexplate or damper

Eagle Specialty Products rotating assemblies are an ideal solution for street/strip and competition engine builds, delivering a complete foundation for your next performance engine project.