Wonders about Cam's
 

I have been reading that cams can increase horse power dramatically, is that true can anyone tell me if it worth changing cams. what kind of gains can you expect, how much does a good cam cost, is it difficult to install, will you get any side effects, just the basics on cams thanks.

https://ls1tech.com/forums/generation-iii-internal-engine/327734-cam-guide.html
http://www.ls1howto.com

Average cam swap is from $600>1200

But a cam is not worth much without supporting bolt ons.
So bolt ons first> stall/clutch > cam/heads > suspention/gears/tranny