Eagle Ford 351W 4.000in Crank 2.750in Journal 6.200in I-Beam Rods 4.040in Pistons Rotating Assembly

This Eagle Pro Street rotating assembly gives you the core components to rebuild or upgrade your Ford 351W engine. Inside this kit, you'll find a 4.000-inch forged 4340 crankshaft, paired with 6.200-inch 4340 I-beam connecting rods. These rods are equipped with 7/16-inch ARP 8740 bolts, known for their strength and reliability under stress. The assembly also includes forged 4032 ICON pistons, which are flat-top with a -11cc dish, designed for a 4.040-inch bore. You also get plasma-moly file-fit piston rings and KING XP rod and main bearings to complete the rotating assembly.

This rotating assembly is built for naturally-aspirated racing applications, meaning it's designed to handle the demands of high-RPM operation without forced induction. The 4340 forged steel used for both the crankshaft and connecting rods offers a strong foundation, providing durability for performance builds. The ICON pistons are forged from 4032 aluminum, which offers good thermal expansion properties for a tighter piston-to-wall clearance. The inclusion of ARP bolts in the connecting rods is a notable detail, as these are a popular choice for their consistent clamping force and resistance to stretching under load. The KING XP bearings are designed for performance use, offering good oil clearance and wear resistance.

When putting this assembly together, remember that the piston rings are file-fit, which means they need to be gapped to your specific cylinder bore and intended use. This allows for precise control over ring seal and blow-by, crucial for optimal performance and engine longevity. This kit is a solid starting point for a performance-oriented Ford 351W build, focusing on the critical rotating components. Please note that this assembly is not CARB approved and cannot be shipped to California.