SBC Rotating Assembly Kit - Street & Strip

The SBC Rotating Assembly Kit - Street & Strip (SKU EAG13010040) is a complete short-block rotating assembly designed for small-block Chevy engines running on the street or at the strip. Built around a 409 cubic-inch displacement platform, this kit delivers the core rotating components needed to rebuild or upgrade your small-block with reliability and performance in mind. Whether you're refreshing a tired engine or constructing a capable street/strip powerplant, this assembly kit eliminates the hassle of sourcing individual components.

This assembly features a cast crankshaft paired with forged 5.700-inch I-beam connecting rods and hypereutectic pistons engineered for durability across both street and motorsport duty cycles. The 4.165-inch bore and 3.750-inch stroke combination delivers 409 cubic inches of displacement, a proven geometry for solid power production. Hypereutectic pistons offer improved wear resistance and thermal stability compared to standard cast pistons, extending service life under sustained load and elevated cylinder temperatures. The I-beam rod design maximizes strength-to-weight ratio, critical for reliable operation at higher RPM ranges typical of strip applications.

Boaters and automotive enthusiasts rebuilding small-block Chevy marine or performance engines benefit from this turnkey approach—no need to cherry-pick pistons, rods, and crank separately. The kit is purpose-built for small-block Chevy applications and integrates seamlessly with standard SBC block castings. Installation requires proper machine work on the block (honing, bore sizing) and attention to torque specifications and clearances during assembly. This is an ideal foundation for engines destined for either consistent cruising duty or competitive strip racing where reliability cannot be compromised.