I am friends with the owners at Procharger and use to build kits for the 2003 and 2004 Mercury Marauders that were Procharger based. They are hoping to get my Hemi in this summer some time for supercharging and tuning. The system would be the same for the 09 and 10 but the tuning would be diffrent. The Hemi running 6psi through it would move on down the highway. Is it summer yet?

 

thats cool

 

Your better off with a root type blower than a centri for our trucks.

Having said that, I'd be concerned with boosting a MDS Hemi.

 

MDS would have to be turned off. As for the bottom of the engine, it should be able to handle 6psi.

So you like this kind of thing better?

 

*drools*

 

I perfer a centrifugal based blower over a roots style blower. For several reasons.

1. The Procharger blower and bracket is a bolt on item like an alternator. You do not have to break any factory gaskets on a under warranty truck. If it blows, it all comes off and you reflash back to stock and no one knows there was a blower on there. If you are running a roots style blower your manifold seal is broke etc.

2. I like the simplicity of the air to air intercooler system over the air to water systems. These air to air systems are proven and make real power. Sure a roots blower will have more right off the bottom but you will just be smoking your tires which you can do on a centrifugal blower as well.

3. It is a proven fact that air to air for the road works very well and is simple. If your are racing than you would benifit from a air to water unit as you can ice down the water and have a much cooler AIT (Air Intake Tempatures).

On the MDS, I am not sure how Procharger will handle that. I am not a tuner, nor would I want to be one. I would be blowing motors. I blew one motor trying to tune it myself. That cost me a 5K lesson LOL!
Roots vs. Centrifugal, it's what you perfer.

Below is a pic of a Procharger 2004-2007 Hemi Ram

http://www.procharger.com/TRUCK_SUV/hemiram-uh.shtml

 

All find and dandy, but you are not focusing on one of the most important aspects of the different way a Roots and Centri make power, which is the main reason why your adding a blower, correct? Spinning tires? Were talking about a 5000+lbs truck that needs all the torque you can muster. Spinning tires becomes a problem in a 3200lbs sports car that makes 700+rwtq with RWD, not a 5000+lbs truck making ~500rwtq. (Even then, I can still get most of it down with some experience in throttle modulation).

Centri's don't really make any real boost until your north of 3000rpm (Using a properly sized blower for your ci motor). Below that, especially at idle, the parasitic loss from the blower will make the Centri setup seem more sluggish than stock. Now I don't know about you, but my truck is not a dedicated race truck, so on the street, I usually drive 90% of the time below 3000rpm. So all you'll do by adding a Centri is make your truck make less torque to the wheel coming off a light 90% of the time? I'll assume you can understand the irony of that, so I won't get into it.

Root type blowers make most of their peak torque as soon as you nail the throttle, right from idle. This is where you want your torque, which is that much more important with our heavy azz 5000+lbs trucks.

Since a picture is worth a thousand words, let me show you with dyno graphs what I'm talking about.

Here is a dyno of my Vette with a 427ci motor and a Centri.



Here is a dyno of my friend's Vette, with a similar sized motor, but with a Maggie which is a root type blower. Not the best dyno, but it'll give you an idea of what I'm talking about.
The end of the dyno is at 6500rpm, so you can count back 500rpm for every vertical line to determine the rpm.



Now look at the torque at 2500rpm on both graphs. Now do you understand why I say your better off with a Root type blower than a Centri on our heavy trucks, especially if they are street driven 90+% of the time? That big torque rating is what your going to feel when you press on the fun pedal. The Root blower will feel like your truck has gained 100% more power driving around town, where you'll feel the Centri will feel like it lost power.

Take it from someone who has a Centri with 800+rwhp in my Vette. I have also driven the Vette that produced the dyno with the Maggie above.
My buddie's Vette even though doesn't make the peak power my blower does, feels twice more powerful driving it around town. Now when our Vettes go north of 3000rpm, then it's a different story. I went with a Centri on my Vette b/c it only weigh's 3200lbs and I race it so it's beneficial for me to have my power in the top half of my rpm band.

If you have a personal preference with Centri, then have fun, I'm not saying the Centri is a bad idea, just that the Root type blower is better suited for our heavy trucks.

 

Agree that the bottom end of the Hemi should be fine at 6 to 8lbs of boost, just so long the AF's are kept to where they should be.

Now that's a blower!

 

You mentioned you will just "pull it off" for warranty issues. Most of those systems are not self oiled. Meaning they tap into your pan or another oil source on the engine. How will you plug the hole?

 

Most Prochargers are self contained these days, as well as some newer Vortechs.