Eagle Ford 351W 4.170in Crank 6.250in I-Beam Rods -16cc 4.040in Pistons Balanced Assembly

Starting with a forged 4340 steel crankshaft featuring a 4.170-inch stroke, this balanced rotating assembly from Eagle is built for serious performance, particularly in naturally-aspirated racing applications. The crankshaft is paired with 6.250-inch I-beam connecting rods, also made from robust 4340 steel, and secured with 7/16-inch ARP 8740 bolts. This combination is designed to handle the stresses of higher RPMs and increased cylinder pressures.

The assembly includes forged 4032 aluminum pistons with an inverted dome design, featuring a -16cc volume and a 4.040-inch bore size. These pistons come with plasma-moly file-fit piston rings, allowing for precise gap setting to optimize performance and sealing. King XP rod and main bearings are included, offering improved durability and reduced friction, which is crucial for longevity under demanding conditions. This entire assembly is balanced at the factory, saving you a significant step in the engine building process and ensuring smoother operation right out of the box.

This balanced rotating assembly is a solid foundation for a high-performance Ford 351W engine build. Please note that this assembly is not CARB approved and cannot be shipped to California. It is also subject to California's Prop 65 warning.