I have a 03GT and want to get 400+ horse power N/A what all you think i would have to do? Like heads, cams, throttle body, intake, full exhaust, chip, pullies?

 

You have the wrong car buddy. Not possible to get a 2v mustang to make even close to 400 rwhp n/a. Try a 4v mustang or an LS-1

 

Ain't that the truth! Hope for 300rwhp, and be pleasantly surprised when you make 20-30 more than that.

 

Pray a lot, Maybe baby jesus will replace your Mustang with a Trans-am!

 

motor swap, go with a 460. Not even feasable to try it with a 2v 281

 

does nitrous count as n/a? then you could get 400 whp.

 

WAIT! He might be able to get it 2v! I almost forgot! They make a 350 stroker kit for the 5.4 . . . so i guess if you got that with some stage 3 heads and cams and maybe a P-51 intake and a nasty tune you might click the 400 rwhp mark. . .[8D]

 

wtf is it with the ls1 thing **** chevys! How is it possible not to get 400 horse the slp kit give you 330 horse add head and cams you good. Plus if i stroke it to a 302 and add heads your golden.

 

The money your gonna spend trying to make a 400rwhp 2v, u better of just buying a supercharger kit and a tune and make 400hp, less money, less work, less heartache.

 

Well Zack (ZW99) has a 5.0 stroker and heads, manifold, and cams and he only makes what 330 rwhp? Wait are you talking about 400 hp at the motor or at the wheels? The slp kit might give you 330 at the motor. . . but probably not. . . 400 at the motor is possible i guess. . .