This is model of a Cylinder Block for a Single Cylinder Engine.
Modelled within Solidworks 2016. Up to 3012 polygons and 4238 vertices, according to Solidworks. Rednders include PhotoView 360 and RealView Graphics.
Feel free to use this model how you desire. Suitable for 3D renderings for visualizations, simulation, real-time scenes, CAD/CFD work, FEA/Stress Analysis etc.