A hybrid chill with enhanced heat transfer for casting of a sand cast aluminum engine block of a vehicle is provided. The hybrid chill comprises a base comprising an outer wall having a first side and a second side. Each of the first and second sides extends from a first longitudinal end to an opposite second longitudinal end. The outer wall is closed to define a hollow portion. The base further comprises a heat transfer fluid in a liquid phase disposed in the hollow portion. The heat transfer fluid has a boiling point of between 320° C. and 400° C. at 1 bar for enhanced heat transfer during casting. The chill further comprises a plurality of crankcase members. Each member is disposed on the first side. Each member is spaced apart from a respective adjacent member defining an open recess.