The F-80E was a proposed F-80C development with swept wing and tail surfaces. Studied under the company design designation L-181, the new design retained the nose, center fuselage, and vertical tail of the F-80C. The aft fuselage was enlarged to house an afterburning Allison J33-A-27 turbojet. The wing and tailplane were swept back at an angle of 35 degrees. At that time, the USAF was perfectly satisfied with the F-86 Sabre, and felt no need for the F-80E, so the project was abandoned. Projected maximum speed of the F-80E was 662 mph at sea level.