5.7 open up not good

Same here I just scraped 3 heads myself. What cyl did it trash? I'm guessing it was number 1 or 3. I have seen this happen about 15-20 times. It's a fairly common failure. Slight detonation, and itbrakes the ring land off. I have seen it on engines with as little as 14,000 miles. A superchips tuner and a weaktank of gas is all it takes.

Sorry for your misfortune, I mighthave a piston or 2 laying arround if you need it. But if it needs to be bored out nothing I can do for you.