we're happy to report that Cummins rates its 6.7 gasoline engine, the Cummins B6.7 Octane, at 325 horsepower and 660 lb-ft of torque. Read more: 15 Popular Oil Filter Brands, Ranked The original 6 ...

rear axle and Cummins B6.7 engine with up to 325 horsepower on its Mack MD Series models. Designed for a gross axle weight rating of up to 23,000 lb., the heavier axle and suspension offer ...