This paper deals with the possibility of designing gas turbines by designing and calculating gas turbine derived from turbocharger K26 5326 970 6003. The paper describes gas turbines as heat engines in Chapter 2, the principle of the operation of said heat engines, a thermodynamic cycle occurring in gas turbines, and the main types of gas turbines. In addition to this, the advantages and disadvantages of the mentioned heat engines are described. Chapter 3 describes the turbocharger, turbocharger principle and its most important parts. In Chapter 4, a turbine was introduced from which a gas turbine is run, the rules, materials and main features of the combustion chamber are introduced, which is then dimensioned and constructed for turbocharger 5326 970 6003. The 3D modeling software Catia produced a 3D model of gas turbine derived from turbocharger 5326 970 6003, and a worksheet drawing of combustion chambers and a draft plan of the aforementioned gas turbine are made and shown in this paper. Finally, at the end of Chapter 4, a calculation of the gas turbine derived from the turbocharger 5326 970 6003 is made, showing how much such a gas turbine would produce power, fuel, and what degree of efficiency would work.