Eagle Ford 4.6L 4-Valve Heads Rotating Assembly Kit with 5.950in H-Beam - +.020 Bore

If you're rebuilding the engine in your 2003-2004 Ford Mustang for serious performance, especially with plans for a turbocharger or nitrous oxide, a strong rotating assembly is key. This kit from Eagle is designed to handle the extra stress and power these upgrades bring. It includes all the core components you need to build a robust bottom end that can take a beating.

At the heart of this kit is a 3.750-inch forged 4340 steel crankshaft, chosen for its strength and durability under high loads. Paired with it are 5.950-inch H-beam connecting rods, known for their solid construction, secured with 3/8-inch ARP 2000 bolts. The pistons are forged 2618 Arias flat tops with a -4cc dish, measuring 3.572 inches in bore size, which is +.020 over the standard bore. These come with plasma-moly file-fit rings, allowing for precise gap setting to match your specific build and application. For smooth operation and longevity, the kit includes Clevite H-series rod and main bearings.

This is a competition-level assembly, meaning it's built for demanding use. Remember that this kit is not CARB approved and cannot be shipped to California. It's a well-built foundation for a high-horsepower engine build.