Brian Crower Crankshaft - Chevrolet LS 4.250in Stroke w/ 58 Tooth Reluctor 4340 Forged Unbalanced

If you're building a high-performance Chevrolet LS engine for your 1997-2004 or 2006-2013 Corvette, this 4.250-inch stroke crankshaft from Brian Crower is a solid foundation. Designed for LS engines that use a 58-tooth reluctor wheel for crank position sensing, this piece is built to handle serious power. It's an unbalanced rotating assembly, meaning you'll need to balance it with your specific pistons, rings, and connecting rods during the engine build process.

Brian Crower uses 4340 forged steel for this crankshaft, a material known for its exceptional strength and durability under high stress. This makes it a reliable choice for boosted applications or naturally aspirated builds aiming for significant horsepower gains. The 4.250-inch stroke is a popular choice for increasing displacement in LS engines, offering a good balance between torque and high-RPM capability. This crankshaft is designed to fit directly into compatible LS engine blocks, simplifying the installation process for experienced engine builders.

This crankshaft is sold unbalanced, which is common for performance builds where custom rotating assemblies are used. Proper balancing is critical for engine longevity and smooth operation, so be sure to work with a reputable machine shop to balance this crankshaft with your chosen pistons, connecting rods, and harmonic balancer. This is a key component for anyone looking to push the limits of their LS engine.