I have been recently thinking of installing a smaller pulley on my 06 cobalt SS and i was wondering what exactly the HP gain would be? Also what are pros and cons about doing this and what brands are recemended. Advise n insight would be greatly appreciated...Thanks.

 

Why the hell are you posting in suspension? FYI don't get a crank pulley. the way that you gain power with an Sc is dropping pullies on the supercharger. Read up on it before you go off buying parts that will bloe your engine

 

If you mean the supercharger pulley, to increase boost you're going need some supporting mods to help with the increased fuel load, increased heat, and a tune as well for the bigger fuel injectors

 

ZZP!

Get one of there stage kits