Manley Chevrolet Big Block 4340 Forged 4.875in Stroke Pro Series Lightweight Crankshaft

Our "Pro Series" 4340 alloy steel crankshafts are available with many value packed and high-performance enhancing features for a wide range of domestic engine applications.

• Rigorous Quality Assurance: Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing to meet our stringent quality standards.
• Lightweight Design, 4340 Non-Twist Forging: Our crankshafts feature a lightweight 4340 non-twist forging, ensuring durability and performance.
• Enhanced Strength: A multi-step heat treatment process and nitriding enhance the crankshafts' strength and longevity.
• Micro-Polished Journals: Large radius journals are micro-polished to reduce friction and enhance performance.