No doubt, having access to a CNC machine is a great resource for engine machine work. Is it worth it? Yes, the advantages outweigh the cost. Not only do you have the ability to run specific programs, but they can be tailored to your specific race applications. The CNC is more precise than a human, and the machine work gets done faster and more accurately--so you get to the track sooner. Typically, machine work on a CNC program might cost around $750.