I read about Torture tests similar to that, that Dodge did with the Hemi engine. It sold me on it. I was a little leary of trading my 5.9 in on a Hemi, but the torture tests sold me. They did the same thing with the heated engine, then cooling it quick to see stress cracks. I often wonder if when they get done testing these engines, if they dump them back into the assembly line and just warrant them the same as all the other engines.