In a car or any other vehicle there are many devices embedded in the body, which require power to get going; for that, a reciprocating engine plays a crucial role of primary source for power generation in the system. Further, to overcome the barrier of the limited speed of the single cylinder reciprocating engine, radial engines are used. The radial engine is a kind of reciprocating engine where pistons are kept together by the single crankshaft with the help of connecting rod. The aim of this paper to indicate the design of engine with given parameters to know stress, strain, load, and so on with the help of computer software (ANSYS). To cite the comparison between two materials for connecting rod.