The Ram Truck brand infuses its products with durable powertrains, robust chassis, new technology and features that further enhance their capabilities. The Ram 1500, 2500 and 3500 pickups; 3500, 4500 and 5500 Chassis Cabs; Ram ProMaster full-size van and Ram ProMaster City small van are designed to deliver the total package. The 2018 Ram commercial ProMaster Cargo Van, Chassis Cab, and Cutaway feature a standard 3.6-liter Pentastar V­6 engine with six­speed automatic transmission or an optional 3.0 L EcoDiesel engine with six-speed manual transmission.