Eagle Ford 351W 4.170 Stroke 2.100in Rod Journals Internal Balance Forged 4340 Steel Crankshaft

If you're building a high-performance Ford 351W engine, a strong crankshaft is the heart of the operation. This Eagle forged 4340 steel crankshaft is built for serious power, featuring a 4.170-inch stroke and 2.100-inch rod journals. It's designed for internal balance, simplifying setup for many performance applications.

Eagle starts with a non-twist forging of 4340 steel, known for its excellent strength and durability under stress. To further enhance its toughness, the fillet radii are .125 inches, which are designed to handle higher loads. Because of these larger fillet radii, you'll need to use chamfered or narrowed bearings for proper fitment. The crankshaft also receives a nitrided surface treatment and a micropolished finish. Nitriding hardens the surface, making it more resistant to wear and fatigue, while the micropolishing ensures a smooth finish for reduced friction and optimal oiling.

This crankshaft is intended for demanding applications where reliability and strength are paramount. It's a solid foundation for a custom engine build where you plan to push the limits.