Eagle Ford 429/460 Boss9 4.500in Crank 6.700in H-Beam -18cc 4.390in Pistons Rotating Assembly

This is the Eagle Ford 429/460 Boss9 rotating assembly, part number 15127030. It's a complete package designed for serious performance builds, especially those looking to handle high stress from racing, nitrous, or forced induction applications on Ford 429/460 BOSS9 engines. A well-built rotating assembly is the heart of any powerful engine, and this kit provides the core components you need to get started.

Inside this assembly, you'll find a robust 4.500-inch crankshaft forged from 4340 steel, known for its strength and durability under extreme loads. The connecting rods are 6.700-inch H-beams, also made from strong 4340 steel, and they come equipped with 7/16-inch ARP 8740 bolts, a popular choice for their reliability in high-performance engines. The pistons are forged 4032 aluminum from Mahle, featuring an -18cc inverted dome design and a 4.390-inch bore size, which are crucial for achieving specific compression ratios. This assembly also includes plasma-moly file-fit piston rings, allowing for precise gap setting to match your engine's bore and intended use, and King XP rod and main bearings, selected for their enhanced performance capabilities.

When putting together a high-performance engine, it's important to ensure all components are compatible and balanced. This rotating assembly is a significant step towards building a powerful and reliable engine. Please note that this assembly is not CARB approved and cannot be shipped to California. It's always recommended to consult with your engine builder or refer to manufacturer specifications for proper installation and balancing procedures to ensure optimal performance and longevity.