Would anybody happen to know how much hp can these pistons take?

Are they a little bit better than the stock pistons?

 

The stock rods are going to go before those pistons ever do. Most 3.8's that I see go are from tossing/bending rods then a piston breaking up.

 

FWIW, those are hypereutectic cast pistons. They suffer the same maladies as stock pistons.

For those in the crowd scratching their heads about what hypercraptastic pistons are and how they're different:

HE pistons contain high levels of silicon. The silicon causes the piston to expand very little when it heats up, meaning that the cold fit between piston and cylinder wall can be tighter and you can avoid startup rattle and get better emissions. The silicon also increases the brittleness of the aluminum in the piston making them more sensitive to detonation. For emissions it's better, for performance it's not.

 

spend the money and get some wisecos or something dude.. may as well just spend some more money and get some scat rods..

If you're going to build the car to take a beating, BUILD IT TO TAKE A BEATING..no shortcuts.. that turbo you plan on putting on will exploit whatever weaknesses that motor has at the track or the dyno.

 

put a turbo on those pistons and you'll find out how weak they are. Get better slugs and some h-beams.