duramax
Duramax is a chevrolet and GMC engine. The engine has between 350-445hp and between 500-910 torque. This is also what year your truck is and what engine your truck has. The 6.6L is the one with 350-445hp and 500-910 torque. This engine is fit in the duramax form the year 2001-2017. The other engines are the 6.2L and the 6.5L.