SBC 4340 Forged Magnum Crank - 4.000 Stroke

The SBC 4340 Forged Magnum Crank by Callies is designed for serious small-block Chevrolet performance builds where durability and reliability are essential. This crankshaft is suitable for high-revving street engines, competition drag cars, and turbocharged road race platforms, making it a versatile choice for various applications.

Crafted from 4340 alloy steel and precision-forged using proprietary techniques, the SBC 4340 Forged Magnum Crank is engineered to resist fatigue cracking and twisting under extreme loads. Its 4.000-inch stroke is optimized for builders aiming for mid-range torque and compatibility with standard small-block deck heights and common rod lengths. Full-radius fillets and premium surface finishing enhance its durability across high-power cycles.

Engine builders targeting sustained power levels above 600 horsepower often choose this crank for applications requiring repeated dyno pulls, endurance racing, or forced induction. It integrates seamlessly with Chevrolet small-block engines, ensuring reliability and performance in demanding environments.