Ok i am very new to car modifcation for starters.</P>


What kind of work needs to be done to a stock GT to handle a supercharger? Or what kind of boost can a stock 03 handle?</P>


So basically i am wondering if there is any necessary work that has to be done first or what kind of boost i can handle stock.</P>


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I understand it is wise to do suspension and brakes first so i mean to actually add the s/c what work has to be done.</P>


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Thanks</P>

 

Your bottom end is said to be safe for 12 lbs boost stock, as long as you have a proper fuel curve and timing. You dont have to do suspension and brakes first, but I promise you the first time you mash the gas and realize you need more traction, you will upgrade then

 

What kind of modifications to the bottom end would i have to do to handle about 14 or 15 PSI?

 

If I were you, I wouldn't do any bottom end mods for 15 psi, but what I would do is have a custom tune and an intercooler. Don't run 15 lbs unless you got the $$ left over to spend on a new bottom end though. If you insist on beefing it up first, you need to get a forged crank, H-beam rods, and forged pistons for lower compression, say 8.5 to 1 or so, that way you can still run on pump gas.</P>


I will be supercharging in a few weeks, I am gonna run 10 lbs as its my daily driver. I fully expect to run over 100k miles without a worry, but if I was gonna run 15 lbs on a stock bottom end, I would give it 10k miles.</P>

 

You shouldn't be focusing on JUST the amount of boost you can run and what it takes to get there....

But what kind of compressor will be pumping out those PSI's.

Example:

A massive supercharger pumping out 15 pounds will make a LOT more power than a small streetable one putting out 15 pounds. You'll also loose streetability with the massive one though.....

 

I think that has more to do with efficiency than the size of the supercharger. Boost is boost, and boost pressure = strain on the motor. Of course, two superchargers putting out identical boost will often times put out different hp levels. Things like supercharger drag and how much the supercharger heats the air play important roles in determining the amount of hp they are giving. But, boost = boost no matter the hpyour're are putting out. If the A/F ratio and timing is safe then all you have to worry about is the strain on the strength of the bottom end. 15 lbs is alot of boost.</P>


So, to sum this up, the type of supercharger is gonna determine the amount of hp you put out and where it comes in, but boost is boost and that = strain on the bottom end.</P>

 

Actually, I do mean size.

Let's say a certain blower puts out 500 cfm per minute at 18 pounds. Another one puts out 200 cfm at the same pressure.

See, the pressure stays the same, but the volume of air that is compressed increases immensely.

Granted, the more effecient the form of FI is, the more power you will make without the extra stress....take a turbo over a centrifugal.

 

Im feelin you on that one mdvadolsta. My KB@ 6psi is making about as much power as an 8psi centrifugal.

 

So i could safely run a ATI procharger P-1SC with 12 psi?

 

I have another question ;P</P>


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What is a bigger hassle, adding a s/c or changing my cylinder heads and intake manifold?</P>