This article shows the finite element analysis for the simulation of dynamic loads to two prototype models of cardan shafts considering two types of material, alloy steel and 1045 steel, to determine the structural efficiency of work, by means of contour conditions extracted from two types of engines raised for a minilow vehicle. In order to perform the structural simulation of dynamic loads, it was essential to simulate motion analysis and determine that both models do not present some gap or energy irregularity. This consisted in obtaining the dynamic results (displacement and angular speed, torque and power), comparing them with those indicated by the manufacturer of each engine. The finite element analysis was then performed for the structural simulation of dynamic loads, identifying the element that generates the minimum Von Mises forces, the lowest unit displacement and the minimum safety factor. The aim of this work is to confirm whether the two models comply with the structural analysis of dynamic loads and, based on this, to select the one with the most favorable results to work on the transmission of a minilow car.