what is the easiest and cheapest way to make a 03 gt have 300+ hp without nitro?
Ill leave it at that for now

 

A supercharger but it is not cheap.

 

a nice supercharger setup will give you 400 at the wheels with the right setup. the setup will cost about 4000 but its the easiest way to get that power.

 

4000 + tune and if you dont have it a TB and plenum or intake manifold, and mabey a guage pod

 

I think he means without power adders...

So, heads and cams. Long tubes, mid-pipe, catback. Throttle body and plenum or some other intake. With a ram or cold air. And then the tune. = SHould be close if not over 300. Also if you get heads, might as well port it since it's all opened up.

 

? why would you buy non ported heads??? also a fox lake intake

 

when it comes to horsepower...you get what u pay for. Gears are the biggest bang for the buck but they still don't technically add hp. If you want more power, you are gonna HAVE to pay for it. and not cheap either. that $200 will get u 10 crank hp MAX. $350 catback? perhaps 10 hp if ur lucky. $400 tb/plenum? perhaps another 10 hp. even long tubes being anywhere from $300-800(not including labor) add 20 max crank hp. Life sux, but then u mod the %(&^ of ur stang and then ur happy

 

headers at 20 to wheels to so u know - well long tubes anyway - not shorties - and exhaust is worth more if u lose those damnd cats!

 

i agree the only thing between fast and faster is how fat ur wallet is!! but nitrous is the cheap effective way to go