Manley Chevrolet LS 4.000in Stroke Lightweight w/ Long Snout (LS-7) Pro Series Crankshaft

Manley Performance is well-known for building strong, reliable engine components for a wide range of domestic applications. This Pro Series crankshaft is a prime example, designed specifically for Chevrolet LS engines and featuring a 4.000-inch stroke. If you're building a performance LS engine, a solid crankshaft is the foundation, and this piece is built to handle serious work.

This crankshaft is forged from 4340 alloy steel, a material chosen for its excellent strength and durability under high stress. Manley has incorporated several features to optimize performance and reduce weight. The mains are gun-drilled, and the rod journals are lightened, contributing to a lighter overall rotating assembly. This helps the engine rev more freely and respond quicker. The counterweights are fully profiled to ensure the crankshaft is precisely balanced, which is crucial for stability at high RPMs and overall engine longevity. To further enhance its strength and resistance to wear, it undergoes a multi-step heat treatment process and nitriding. The journals are also micro-polished with large radii, which helps reduce friction and improve oil flow, contributing to better performance and extended component life.

Manley doesn't cut corners on quality assurance. Each crankshaft is stress relieved, shot peened for improved fatigue strength, and 100% magnafluxed to detect any potential flaws. This rigorous testing ensures that each crankshaft meets their strict quality standards before it ever leaves the factory. If you're looking for a well-built crankshaft for your LS performance build, this Manley Pro Series unit is a solid option.