Concurrent product and process development methods were utilized for the 3406E, starting with defining customer requirements through Quality Functional Deployment (QFD). Horsepower and Torque Specifications The Caterpillar 3176 marine engine is capable of producing a maximum of 600 horsepower when operating at 2,300 revolutions per minute. The peak torque rating of the 3176 is 1,889 pound-feet when operating at 1,600 revolutions per minute.