wicked383lt1

Happy New Y'all, so I installed a lq9 with a Ms3 cam and now my brakes are terrible. I've bled them out and checked all the vacuum connections. Everything is good. I read somewhere that when you install a cam this happens due to not having enough vacuum. Well when I hit the brake pedal it goes all the way down and never really feels tight like it use to. Can anyone chime in and give me some pointers?