Eagle 638134000 8-Cylinder Engine Rotating Assembly Kit

The Eagle 638134000 is a complete engine rotating assembly designed for 8-cylinder applications. Eagle Specialty Products rotating assemblies are test-fitted in-house and engineered to deliver a strong balance of performance, reliability, and durability for street, strip, and competition builds.

Each Eagle rotating assembly kit includes the core internal engine components needed for a complete bottom-end rebuild or stroker conversion. Assemblies are available in balanced or unbalanced configurations, giving builders the flexibility to let their machine shop handle final balancing if preferred.

What's Typically Included:

• Crankshaft (cast steel or forged 4340, depending on configuration)
• Connecting rods (I-Beam or H-Beam, depending on application)
• Pistons with pins and locks
• Piston rings
• Rod and main bearings (King or Clevite)
• Harmonic damper and flexplate/flywheel (externally balanced assemblies only)

Key Features:

• Components are test-fitted at the factory to ensure proper fitment and clearances
• Forged 4340 crankshafts (where applicable) feature center-counterweighting for improved strength
• H-Beam rods (where applicable) are paired with ARP 2000 or L19 bolt upgrades for high-load applications
• Designed to support high-boost, nitrous, and high-horsepower builds depending on configuration
• Available balanced by Eagle or unbalanced for machine shop finishing

Eagle Specialty Products is one of the leading aftermarket manufacturers of connecting rods and rotating assemblies. Confirm all specifications against your engine's bore, stroke, and compression requirements before ordering.