Eagle Ford 289 2.870in Stroke Internal Balance Forged 4340 Steel Crankshaft

If you're building a high-performance Ford 289 engine and need a solid foundation, this Eagle forged 4340 steel crankshaft is a serious contender. It's designed with a 2.870-inch stroke and internal balance, making it a key component for engines that will see a lot of action. This crankshaft is built to handle the stresses of performance builds, providing a reliable center for your rotating assembly.

Eagle starts with a non-twist forging of 4340 steel, which is known for its strength and durability. They've added .125-inch fillet radii, which are chamfered for superior strength where the crank journals meet the throws. This design detail is important because it helps prevent stress risers, especially in demanding applications. The crankshaft also receives a nitrided surface treatment and is micropolished. Nitriding hardens the surface, improving wear resistance, while micropolishing ensures smooth bearing surfaces for reduced friction and improved oil flow. Because of the .125" fillet radii, you'll need to use chamfered or narrowed bearings with this crankshaft.

This crankshaft is a well-built piece intended for those who plan to push their Ford 289 engine. It's a critical part of your engine's rotating assembly, and choosing a strong, well-made crankshaft like this Eagle unit sets you up for success in your build.