Allison J33

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J33
Allison J33 turbojet engine on display at Flugausstellung Hermeskeil
Type	Turbojet
Manufacturer	General Electric Allison Engine Company
First run	1942
Major applications	Lockheed P-80 Shooting Star Lockheed T-33 Shooting Star Lockheed F-94A/B Starfire SSM-N-8 Regulus
Developed from	General Electric J31

The General Electric/Allison J33 is an American centrifugal-flow jet engine, a development of the General Electric J31, enlarged to produce significantly greater thrust, starting at 4,000 lbf (18 kN) and ending at 4,600 lbf (20 kN) with an additional low-altitude boost to 5,400 lbf (24 kN) with water-alcohol injection.