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2017+ Duramax 6.6 L5P

GM released the new version of the Duramax Diesel in 2017 named the L5P.  It boasts 445 horsepower and 910 ft/lbs of torque right out of the box.  Many improvements were made to the fuel system, turbo system, crank, heads, and other areas to provide not only more power, but better reliability.