Boosted 99-04 GT's on stock internals.

[nxhappy]

it will handle 10psi no problem. My 2v was pushing 14lbs on a cool night.

 

[bobby_0081]

As impressive as those numbers are, you have no where to go from there that isn't expensive to add more power. I can spend 100 dollars, swap a smaller pulley and add 50rwhp in a night.

Dollar for dollar a supercharger setup will be cheaper than doing it N/A every time, so unless you're into spending gobs more money than you need to, to make less power than a supercharged car, then sure that statement isn't true. This has been done forever, it's no secret.

Until you have to rebuild the engine and then you will want the nice heads and cams and then spend the money.

 

[ponyboyisaac]

9psi since 2006 and still on stock rotating assembly. Things to remember: have a good tune and rpm is the enemy. Don't go past 6,000rpms. I have my rev limiter at 6500 rpm, and I've shifted at around 6400 from time to time but I wouldn't recommend it. I've probably been lucky. These rods don't like high rpm, but when the power keeps building past 6000rpm its hard not to stay in it lol.

 

[Stanger00]

Another here that has run 10-12psi with stock long block for 33k miles from 2006 to 2011 still made 400hp to the tire when removed for built long block.

 

[Mattstang04]

Mines got 400 to the wheels with a 12 psi Procharger. That's on the 116xxx mile original engine. Blowers been on the car for over 20xxx miles.

 

[Mach828]

Ive been pushing 12psi on my bone stock bottom end 2V for 3 years now. It is a day and night difference than a stock one. Love the car and I know it is on borrowed time but until it pops Im going to keep running the sh&* out of it. Me and Dan @ Pro Dyno has played with this tune many of saturdays to make sure it stays safe. Car put down 512 RWHP last time we had it up there. here is the video he made of it

www.youtube.com/watch?v=jWivYF3QBzg

That torque is impressive!

 

[stangfreak03GT]

I will keep saying its all in the tune. I recently installed a IW 10% overdrive pulley and my boost is now at 17psi. I'm still on the factory long block.
Some numbers from last Thursday's grudge racing. Car is 2384

 

[blownstang4.6]

67k mile stock motor. Supercharged for 4.5 years. Daily driven.

non-intercooled at 9psi 356/371 for 2 years
intercooled at 9psi 361/370 for 2 years
intercooled at 12psi 411/402 for 6 months

I have 4.10's at cross the traps at 113.6mph on a 26" drag radial so I'm revving the motor to 6300-6400rpm in 4th with no issues. Car makes 12psi at 6150rpm. Probably around 13psi at 6350rpm.

 

[blacksheep-1]

I've run a 9psi KB on my stock 99 GT for 40K miles. I would make the argument that the roots is harder on the engine than a centri, especially the KB since it comes on with a lot of torque.

 

[spike_africa]

67k mile stock motor. Supercharged for 4.5 years. Daily driven.

non-intercooled at 9psi 356/371 for 2 years
intercooled at 9psi 361/370 for 2 years
intercooled at 12psi 411/402 for 6 months

I have 4.10's at cross the traps at 113.6mph on a 26" drag radial so I'm revving the motor to 6300-6400rpm in 4th with no issues. Car makes 12psi at 6150rpm. Probably around 13psi at 6350rpm.

You can swap in better springs and rev a stock 2v to 7k rpms+ rpms.

 

[Stanger00]

You can swap in better springs and rev a stock 2v to 7k rpms+ rpms.

I wouldn't with a cast crank. I would go to 6500 but over that is a risk from what I've read around.

 

[usaf_branham]

I've been pushing 11 psi for 6 years (KB), 2 of which with mhs stg 1 blower cams & rpm north of 6200. I am still running fine.