http://www.fremontford.com 1 866 427-0552 Ford's E-Series full-size van models, otherwise referred to by the name Econoline, can be equipped in a wide range of configurations for both cargo and passenger duty. Passenger versions come in two primary models-the standard-duty E-150, and the Super Duty E-350, which offers increased towing and hauling ability. The E-150 comes in a single length, while the E-350 comes in standard or extended versions. The extended version is about 20 inches longer. A 225-horsepower, 4.6L V8 is standard on the E-150, while all Super Duty E-350s come with a standard 255-horsepower, 5.4L V8. The 5.4L is optional on the E-150; exclusive to the E-350 is the optional 6.8L Triton V10 or 6.0L Power Stroke turbo-diesel, which is best for towing and makes 235 horsepower and 440 lb-ft of torque.