Creating more torque or...

I read on another forum a couple days ago that underdrive pulleys decrease torque. Which does not sound right. Light engine parts, pulleys, flywheels, CVs, etc... Should allow you to redirect torque to the wheels rather than actually decrease the torque output of the engine right??? Somebody speak on this... :dunno:

i dunno...i know that if you buy adjustable cam gears, you can put it for low end torque, or high end torque. either way your losing it one way or another. correct me if i'm wrong, that's what i read though.