Eagle Ford 351W 4.000in Crank 6.250in I-Beam Rods -26cc Inv Dome 4.125in Pistons Balanced Assembly

Starting with a forged 4340 steel crankshaft featuring a 4.000-inch stroke is key for building a robust Ford 351W engine. This Eagle Pro Street rotating assembly is designed for naturally-aspirated racing applications where reliability and performance are critical. The crankshaft is paired with 6.250-inch long I-beam connecting rods, also made from strong 4340 steel, and secured with 7/16-inch ARP 8740 bolts. This combination is balanced as an assembly, meaning the critical rotating components have been precisely weighted together to minimize vibration and ensure smooth operation at higher RPMs.

The pistons included are forged 4032 aluminum from Mahle, featuring a -26cc inverted dome design. This dome shape is specifically chosen to work with certain combustion chamber volumes, often helping to achieve a desired compression ratio for performance builds. They come with plasma-moly file-fit piston rings, which allow for precise gap setting to match your specific engine build and ensure good sealing. King XP rod and main bearings are also part of this comprehensive package, offering improved durability and performance over standard bearings, especially under the stress of racing conditions.

This balanced rotating assembly is a solid foundation for a performance-oriented Ford 351W engine. It's important to note that this assembly is not CARB approved and cannot be shipped to California due to emissions regulations. Always consult with your engine builder or refer to manufacturer instructions for proper installation and any additional components needed for your specific build.