Manley Performance Forged 4340 Crankshaft Lightweight Design for Chevy C6

Manley Performance Forged 4340 Crankshaft — Lightweight Design for Chevy C6 Upgrade your Chevy C6 with a race-proven crankshaft engineered for strength, balance, and reduced rotating mass. The Manley Performance Forged 4340 crankshaft delivers reliable power gains and long-term durability for street, strip, and track applications. Key Features Forged 4340 construction — premium alloy for superior tensile strength and fatigue resistance. Lightweight design — lightened rod journals and optimized counterweights reduce rotational inertia for quicker rev response and improved throttle response. Fully profiled counterweights — precision machining ensures excellent balance and reduced vibration at high RPM. Multi-step heat treatment & nitriding — enhanced surface hardness and longevity under high-stress conditions. Micro-polished large-radius journals — lower friction, improved oil film stability, and extended bearing life. Rigorous QA processes — stress relief, shot peening, and 100% magnaflux inspection for consistent reliability. Benefits Improved acceleration and throttle response from reduced rotating mass. Greater durability for high-horsepower builds thanks to forged 4340 and nitrided surfaces. Smoother operation and longer bearing life due to micro-polished journals and precision balancing. Confidence in quality with comprehensive inspection and finishing steps. Fitment: Designed specifically for Chevy C6 applications. Ideal for performance rebuilds, upgrades, and high-RPM engines. Choose Manley Performance for a crankshaft that combines lightweight responsiveness with race-ready strength and documented quality control.