[pwd72s]

Not quite Steve. I'm running KB hyperutectics in my 360 MOPAR. They're cast alright, but with a higher silicone content than normal "cast". Damned near as strong as forged. But WITHOUT the "slap" problems of forged when you get to larger diameter pistons. In other words, hyperutetics don't expand and contract with heat as much as forged pistons do. Not nearly as much. That means you can build an engine with closer piston/cylinder wall clearances than you can with forged pistons, but still end up with a much stonger piston. Ever watch dirt track sprint cars, alcohol burners? You'll find hypereutectic pistons in most of 'em. They are a lot stonger than stock cast pistons. Hey, they work in fuel dragsters, running nitro. Keith Black proved that years ago. All that said? With the itty bitty Porsche pistons, and yes, 3.6 liter engines are itty bitty compared to USA V-8's, go with forged, you'll be happier. But when the bores get bigger, hypereutectics are well worth considering, IMHO...

[This message has been edited by pwd72s (edited 10-24-2001).]