Eagle Ford 351W 4.000in Crank 2.750in Mains 6.250in I-Beam Rods 4.030in Pistons Balanced Assembly

This Eagle Pro Street rotating assembly starts with a 4.000-inch forged 4340 steel crankshaft, featuring 2.750-inch main journals. This robust crank is the foundation for building a strong Ford 351W engine, especially for naturally-aspirated racing applications where durability and precise geometry are key.

Paired with the crankshaft are 6.250-inch I-beam connecting rods, also made from 4340 steel. These rods are secured with 7/16-inch ARP 8740 bolts, known for their strength and reliability under high stress. The assembly includes forged 4032 Mahle pistons with a -26cc inverted dome design, intended for a 4.030-inch bore. These pistons come with plasma-moly file-fit rings, allowing for custom ring gap adjustments to suit your specific engine build. King XP rod and main bearings are included, offering excellent performance and wear resistance for the rotating assembly.

This assembly is balanced from the factory, saving you a significant step in the engine building process. It's designed for naturally-aspirated racing use, meaning it's built to handle the demands of high RPMs and consistent power output without forced induction. Please note that this assembly is not CARB approved and cannot be shipped to California. It is crucial to consult manufacturer installation instructions for proper assembly and break-in procedures.