Ford 3.7 Cyclone Engine Problems The Ford 3.7 V6 Cyclone engine (Duratec 37) made its way to market in 2009 and remains in production today. Ford's 3.7L engine makes 270 to 305 horsepower. In the 2011 Mustang it was officially the first engine to offer 300+hp and 30+mpg. In other words, the Duratec 37 offers a great balance of power and fuel economy. However, no engine is … [Read more...] about The 3 Most Common Ford 3.7 V6 Cyclone Engine Problems