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The first production model of the TF-80C had a 4,600 lb. thrust Allison J33-A-23 engine and this was followed by a series of engines of increased thrust, culminating in a the 5,400 lb. thrust Allison -A-35 engine. All T-33 aircraft were produced under USAF contract, including those for the U.S. Navy which were designated TV-2s; in 1962, these were designated T-33Bs. A total of 5,691 Lockheed-built
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