A lot of people get hung up on engine paint. They worry the paint will burn from the heat. Most paint will start burning at 300 plus degrees? If your engine is running that hot, you have other problems besides paint. Exhaust manifolds are a whole nuther story.

So you can use almost any automotive paint on your engine. Make it match the body paint if you want. Like anything, you need to prep the metal to make sure the paint sticks.