Eagle Chevrolet LS 4340 4.000in Stroke 24 Tooth Reluctor Forged Crankshaft

If you're building a high-performance Chevrolet LS engine and need a crankshaft that can handle serious power, this Eagle forged 4340 steel crankshaft is a solid choice. It's designed for builds where reliability under extreme stress is paramount, like racing or heavily modified street machines. This crankshaft features a 4.000-inch stroke, which is a common choice for increasing displacement and torque in LS engines, and it comes with a 24-tooth reluctor wheel, essential for proper engine management system communication on many LS applications.

Eagle starts with a non-twist forging of 4340 steel, a material known for its strength and durability, then further enhances it. The fillet radii are .125 inches, which are chamfered or narrowed to accept specific bearings, providing superior strength where the crank journals meet the throws. This design detail is crucial for preventing failures under high load. The surface of the crankshaft is nitrided for increased hardness and wear resistance, and then micropolished to ensure smooth operation and optimal bearing life. This level of attention to detail means the crankshaft is well-built to withstand the demands of a performance engine.

This crankshaft is a direct fit for a wide range of Chevrolet LS engines, including those found in performance cars like the Corvette, Camaro, and Firebird, as well as trucks and SUVs like the Trailblazer SS. It's important to note that due to the .125" fillet radii, you will need to use chamfered or narrowed bearings when installing this crankshaft. Always refer to the manufacturer's installation instructions for specific details regarding bearing selection and installation procedures to ensure optimal performance and longevity of your new engine build.