The 12.7 Detroit diesel engine has a peak torque rating of up to 1,650 ft-lbs (2,232 Nm) depending on the model and application. This is more than enough for most medium duty applications such as trucks, buses, construction equipment and agricultural machinery. The 12.7 Detroit also offers good fuel economy thanks to its advanced design features like the high pressure common rail injection system and turbocharging with variable geometry turbine (VGT). In addition to offering great performance at low RPMs for greater fuel efficiency over longer distances, the 12.7 Detroit delivers strong torque even when operating under heavy loads or in extreme conditions due to its robust design components including an air-to-air aftercooler which helps manage temperatures during operation. Whether it’s used in a recreational vehicle or commercial trucking fleet, the 12.7 Detroit is sure to provide reliable power while meeting all your needs with plenty of torque available whenever you need it!