First, welcome to the forums here!
Second, I would suggest that you don't attempt this, mainly because it sounds as if you're not very familiar with archery equipment yet. However, to answer your question...
You can change the
cams on many bows, but it will all depend on the manufacturer and model line - I'd try the manufacturer's websiteand see if it is an option for your specific bow - if nothing else, call them directly to find out - tech support is your friend