SBC Balanced Rotating Assembly - 350 .030

The EAGLE SBC Balanced Rotating Assembly - 350 .030 is a complete, dyno-balanced crankshaft and piston package engineered for Small Block Chevy builders seeking reliable performance and longevity. This kit delivers the core rotating components needed for a solid rebuild or performance upgrade, eliminating the need to source and match individual parts. Whether you're refreshing a tired 350 or assembling a street-strip powerplant, this pre-engineered assembly saves time and ensures proper mass balance across the entire rotating mass.

This assembly features a cast-iron crankshaft with a 3.480-inch stroke paired with hypereutectic pistons and 5.700-inch I-beam connecting rods, all balanced together as a complete unit to minimize vibration and internal stress. The 4.030-inch bore accommodates the oversized piston package, pushing total displacement to 355 cubic inches while maintaining the robustness of cast construction. Hypereutectic pistons offer superior wear resistance and thermal stability compared to aluminum alloys, making them ideal for street applications and moderate boost scenarios. The I-beam rod design provides excellent strength-to-weight characteristics, crucial for reliable operation at sustained RPM.

Experienced engine builders and weekend warriors alike benefit from this bolt-together assembly, which reduces machine work and assembly errors common when sourcing individual components. Installation requires standard Small Block Chevy block and head preparation; verify your block can accommodate the .030 overbore before ordering. This assembly integrates seamlessly with OEM or aftermarket blocks, cylinder heads, and intake manifolds, making it a versatile foundation for street, strip, or marine applications. Proper break-in procedures and quality oil are essential to maximize the lifespan of this precision-balanced package.