Abstract: An air powered engine assembly for improving efficiency includes a housing, which has an axle rotationally engaged thereto and extending through a front and a rear thereof. A turbine and a cam are engaged to the axle and positioned within the housing proximate to the front and the rear, respectively. The cam is bilobal. A plate engaged to the housing defines a chamber therein. The plate has a plurality of apertures positioned therein. Each of a set of reciprocating compressors is engaged to the housing and is fluidically engaged to the chamber. The reciprocating compressor comprises a piston rotationally engaged to an arm, which is rotationally engaged the housing. The reciprocating compressor forces air through the apertures to turn the turbine to rotate the axle. The cam is rotated to selectively engage alternatingly positioned arms as the axle rotates to actuate associated reciprocating compressors.