Ok, this summer I'm planning on doing alot of work to my 03 GT. I want to supercharge it, but at the same point, i would like to replace the heads, put a cam in it, headers, and a throttle body. It already has a CAI, mass air flow meter, underdrive pullies, catted x-pipe, and flowmaster cat backs. Which would be better, build up the engine with heads etc... or supercharge it?

 

Nitrous would be the cheapest.

 

build your motor up so your future supercharger will work on it.
Ford told me that you can slap on a supercharger up to 10 psi on a stock GT.
Ide save the supercharger for later after you do all that work.

 

You might want to put 2 cams or it will probably run like poo. Nitrous is the cheapest HP mod. If you build your motor up, keep in mind superchargers like low compression, so watch your compression ratio. Also, if you decide to supercharge it, you will need blower specific cams.

 

build your motor first. if you just throw the supercharger on, you're going to have to retune it for all them other mods you plan on doing. i got impatient and now i have to get it retuned when i install my tb/plenum. [:@]