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the factory torque to yield hardware wouldn’t see it’s factory torque value
The X4 Performance Programmer connects high-performance tunes to your vehicle for a boost in horsepower & torque
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and keep your tires tracking straight and true
2001-2016 Duramax 6.6L Callies Durastar Forged Stock Stroke Crankshaft (D333M81-CS) 2018 - 2021 Ford Tuning & Electronics the factory torque to yield2001 2016 Duramax 6. 6L Callies Durastar Forged Stock Stroke Crankshaft (D333M81 CS) Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GMs popular Duramax diesel. This improvement is the result of substantially stronger steel, considerably deeper nitride layer and unique machining features. Durastar crankshafts are intended to be externally balanced with stock damper and flywheel configurations.