Eagle Ford 351W 4.000in Crank 6.200in I-Beam Rods 4.060in Pistons 157 Tooth FP Balanced Assembly

When you're building a Ford 351W for street use, this balanced rotating assembly from Eagle gives you the core components you need to get started. Inside this package, you'll find a 4.000-inch cast crankshaft, 6.200-inch I-beam connecting rods fitted with 3/8-inch ARP 8740 bolts, and Hypereutectic KB pistons. These are flat-top pistons with a -6.5cc dish and a 4.060-inch bore size, paired with plasma-moly file-fit rings. The assembly also includes King rod and main bearings, a damper, and a 157-tooth flexplate, all balanced as a unit.

This assembly is designed for pump gas, naturally aspirated street vehicles. The cast crankshaft offers solid performance for everyday driving and moderate performance applications. The I-beam connecting rods are a strong choice for street builds, and the inclusion of ARP bolts means you're starting with reliable hardware. Hypereutectic pistons are known for their good thermal stability, making them a popular choice for street engines that see regular use. The file-fit rings allow for precise gap setting, which is crucial for proper sealing and performance. Having the entire assembly balanced from the factory saves you a significant step in the engine building process, ensuring smoother operation and reducing vibration.

It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions and specifications when assembling your engine. This rotating assembly is a foundational piece for your 351W build, providing the essential rotating components ready for your cylinder heads and other engine parts.