Eagle Chevy 350 3.480in Crank 5.700in H-Beam -21cc 4.040in Pistons Rotating Assembly

This is a complete rotating assembly from Eagle for a Chevy 350 engine, featuring a 3.480-inch stroke crankshaft, 5.700-inch H-beam connecting rods, and pistons designed for a 4.040-inch bore with a -21cc dish. This assembly is a critical component for anyone rebuilding or upgrading their small-block Chevy V8, providing the core rotating mass that dictates engine displacement and internal balance. It’s built for performance applications where increased displacement and strength are needed.

The heart of this assembly is the Eagle 3.480-inch stroke crankshaft, forged from high-quality steel for durability under stress. Paired with the 5.700-inch H-beam connecting rods, known for their robust construction and ability to handle higher RPMs and increased cylinder pressures, this setup is well-suited for performance builds. The included pistons are designed for a 4.040-inch bore, common for many Chevy 350 applications, and feature a -21cc dish. This dish volume is important for achieving a desired compression ratio when paired with specific cylinder heads and head gasket thickness, allowing tuners to dial in engine performance for street or strip use. Eagle is a well-known name in performance engine components, and this assembly reflects their focus on providing strong, reliable parts for demanding builds.

When installing a rotating assembly like this, proper balancing is crucial for engine longevity and smooth operation. While this assembly is balanced for the included components, it's always recommended to have the entire rotating assembly (crank, rods, pistons, rings, bearings, and flexplate/flywheel) professionally balanced by a machine shop to match your specific build requirements, especially if you plan on using a different harmonic balancer or flywheel. This ensures optimal performance and prevents premature wear. Please note that this assembly is not CARB approved and cannot be shipped to California due to emissions regulations.