Design 3D Animation of rotating engine

We need someone to create an animation of rotating cams,gears and interacting pistons. Par files and Autocad 2D drawings will be supplied, Freelancer will need to create 3D parts from 2D Files and create a 3D Model of the entire engine to create the animation from. Gear modelling will be needed to calculate two different sized gears. Freelancer will need to be proficient in both Autocad and Solidworks.