In the 1930s, Lycoming made a number of attempts to develop successful high-power aircraft engines. The O-1230 was Lycoming's attempt to produce an engine based on the United States Army Air Corps hyper engine concept, and used a variety of features to produce nearly of engine displacement. However, by the O-1230's entry into service, it had been surpassed by other designs and the investment was not recouped. Another attempt was made to rescue the design by stacking two O-1230s to make the H engine H-2470 but the only design to use it, the Vultee XP-54, never entered production. The Curtiss XF14C was originally intended to be powered by the H-2470, but the engine's poor performance led to the adoption of an alternative radial engine on the prototype. (The XF14C did not enter production.)