it goes or it blows... make sure it runs good and idles well and cooling system operates, then drive it around easy for maybe 100 miles. then give it hell. gotta know that the engine is gonna take whatever you can throw at it. and running it good will seat the rings faster. you gotta use all of your engines revs. i dont mean just run it to the governor, but a few spirited blasts down the road and stuff like that are fine. if its gonna break, i want it to break right now, not on my trip somewhere, 300 miles from the nearest trailer...