[cstreit]

Phillippe,

It depends on the design of the piston, since there are several. Also, what are you using the motor for?

If the piston is taller than stock, it could potentially reduce your piston to valve clearance margins. Plus the increased compression could cause you to have to twin-plug the motor or run race gas. Higher compression in general will give more torque, etc.. but at a definite cost, including potentially having to upgrade other parts (cams, head work, etc..)