To add Cams and long tube headers you will only see about 30--35 HP gain now if you also add OR Xpipe and exhaust you can add another 7--12 HP for atotal of 37--47 HP. if you want to spend your money more wisely just go FI pro charger or magna charger are just two of your less expensive choices,or you could go with a Saleen or Roush super charger. FI is the best dollar for dollar way to increase your HP!!!
I disagree the right set of cams and a real set of long tubes with the proper tune will net at least 45 peak RWHP that's with catted "X" pipe and most likely 30-35 across RPM band.
To add Cams and long tube headers you will only see about 30--35 HP gain now if you also add OR Xpipe and exhaust you can add another 7--12 HP for atotal of 37--47 HP. if you want to spend your money more wisely just go FI pro charger or magna charger are just two of your less expensive choices,or you could go with a Saleen or Roush super charger. FI is the best dollar for dollar way to increase your HP!!!
Well I can give you a bit of insight into your question, but I have to ask you a question. Are the set of cams you're looking into more for sound or for performance? I know when I got my Hot Rods installed, I only gained like 4-5 lbft of torque and like 8 rwhp, but the sound was killer. There are other cams out there which will provide more power. The full exhaust, long tubes + O/R h-pipe netted me about 25 rwhp when I did it. So like another poster said, you're looking at mid 30s overall gain. The h-pipe should get you another 10 or so depending on tune, etc.
As for the nitrous as some people stated, it is a nice inexpensive temporary power increase, but if you use it enough and are careless doing so, it can become very expensive. Best overall bang for the buck is the CAI + tune, which you said you've already done. Next would be the exhaust.
Also, FI is not a bad way to go but I like the idea of staying all motor. Plus we all know, bolt-ons help bolt-ons.