Fire it up! Make sure you have the trans full so the pump bushing isn't dry and you may want to have it in neutral (727's don't pump in park). Also, if there is no exhaust on it, you may want to call the police first, before the neighbors do. LOL
Breaking in a cam only last for 20 minutes.....Where I live by the time people call and the police actually show the hell up , The motor will be off already....LOL