Demand for lower-power engines was already being met, and wartime experience showed the need for high power, so only the 12-cylinder model was produced in quantity-20,478 of them. They were ...

In 1956, based on the commercialized CJ805-3 version of the military J79 turbojet then powering the Convair 880, GE began development of an aft fan engine, the J79-X220, later designated CJ-805-23.