9. NASCAR Engine Requirements
NASCAR engines are required to be outfitted in at least 500 production cars before they can be raced. Granted, they have many special modifications, but the engines are essentially the same. If you enjoyed this engine fact or know someone who would, be sure to share it. Coming up next are more awesome engine facts. We saved the best for last so be sure to stick around until the end. Quote of the day: “Scientists investigate that which already is; Engineers create that which has never been.” – Albert Einstein”