hp question?

[HiPO28104]

What else can I do to be close to 500hp without porting or nitrous? Mods in sig.

 

[Blown04GT]

smaller upper and add a lower pulley, get it retuned, and pray. You prolly won't hit 500 without the port but I am sure it can be done with the right combo. Mine made 459 SAE with no longtubes, no pulley, and no port. Good luck with it.

 

[KingCobra03SVT]

Well looking at your mod list I didnt see anything like a throttle body (Accufab Big Oval) or Inlet Pipe (C&L Trueflow) That would definitely open up some hp. I would even maybe consider going with a 2.76 pulley instead of a 2.90 which would give you more boost. I mean it seems like you have done everything else as far as the basic stuff (H Pipe, Cold Air Intake, Etc). I mean theres not much more you can do after that I mean you would have to port,spray, aftermarket blower (KB, Whipple), Heads/Cams and as we all know that gets pricey. The port wouldnt be too bad of an idea I know you didnt want to do that but I know Stiegmeier does a stage 1 port. The stage 1 is like $345 and gives like 30hp so I mean that could possibly put you where you want to be If you are really trying to push for that 500rwhp.