Stock piston Rev limit

If you have a machinist that says engines only fail because soemthing causes it - he hasn;t made the power at the level you're talking about. Cast pistons will deform - the ring lands can collapse, the dome surface can flex and break, the pins can move (and will under those loads)... It's not just detonation. It's using the wrong parts, or installing them improperly. Same is true for horsepower before a bloc klets go. I've seen 650+ naturally aspirated and I've read about 1000 with turbos. And yet I've seena 350hp 340 split the bores. So it's all relative. if it was me and I was going to buy a couple turbos, have a manifold or header made, and spend on the boost type car - I'd be damn sure the bottom end wasn't going to blow and send schrapnel through the oil system and intake tract. But thats' me.