[markd]

Supercharger for 300C

Does anybody have info on a supercharger for the 300C ? I understood that Whipple was going to produce it for the D-C. I contacted Whipple and the reply was they have no plans to manufacture a unit for the Hemi 5.7

 

[GMLind]

The first thing that comes to mind is if the 5 speed tranny can handle the added power of a supercharger. And what kind of air/fuel managment tuning will be available for the 300C electronics. Chances are you may have to just "suck it up" and live with an anemic 340HP and 390 ft-lbs (being sarcastic). Are you kidding me...still need to get bigger meats on the back end anyway. 225 series tires are fine for winter, put that much power needs more rubber out back.

 

[ekool]

To my knowledge, the transmission in the 300C is the same tranny as the one used in the E55 AMG -- The Mercedes 5 speed automatic... should be able to handle the power with no problem.

 

[GMLind]

That would be great. I would love to drop a supercharger into my 02 AWD Escalade, but I have no doubts the tranny would barf all over the road. Love power...hate fixing things I screw up in the quest for more power and speed.

 

[mattraff]

To my knowledge, the transmission in the 300C is the same tranny as the one used in the E55 AMG -- The Mercedes 5 speed automatic... should be able to handle the power with no problem.

That's awesome. Good enough for 12 second 1/4 mile times, eh?

 

[E55 KEV]

To my knowledge, the transmission in the 300C is the same tranny as the one used in the E55 AMG -- The Mercedes 5 speed automatic... should be able to handle the power with no problem.

The E55 AMG and all AMG use a high torque tranny which comes from the SL600 V12 models. The 300 and Magnum tranny is not actually a Mercedes built tranny but a unit built in the Kokomo, Indiana from the same design.

 

[fathemi]

Yuppers. I wouldn't go counting on the tranny (or the differential, for that matter) to even handle the current 390lbs-ft if left unfettered by ESP. That's probably part of the reason they don't let you turn it all the way off.

Put sticky tires on our 2-ton beasts, unplug ESP, and do a few hard launches and I'll bet something will pop. Put more power in the mix and it'll pop faster.

First thing I'd like to see is a gear package. The 2.8 rear end is embarassing. Great for mileage and a nice, balanced touring ride, but. . . geez. . . at least 3.4. . . guess they really didn't want the extra torque multiplier. The CTS-V sports 3.73 stock. . . that's a big part of why it packs a better SOTP punch.

 

[ekool]

Everything I've seen mentioned is that it is the same tranny, simply manufacturered here in the states. They dont mention the design changes???

 

[E55 KEV]

I agree that the tranny is the same basic design as the Mercede 5-Speed, however, I doubt the tranny is the same used in AMG cars. All AMG cars get the High Torque tranny from the SL600 and all V12 models. Even though the 300C has 390 ft-lbs I doubt that it and the 300 Touring & Limited AWD models will have the high torque unit. I can not see the Chrysler V6 AWD and 300C getting a better tranny than used in all other non AMG Mercedes cars.

 

[Capone]

It is possible...

In the event that the tranny can hold up, and the ESP actually lets the car move under a heavy right foot, Kenne Bell makes a hemi super charger unit, as well as what they call a Boost-a-pump and a Opt. II computer mgmt program. Given, these are all currently ram mods, but the possibility should exist for a retro fit. If a tranny can hold out for 390 lb-ft stock (IF being the definative question) there might be some chance for it staying in one piece. At the very least, the computer kit by KB or a similar one by JET for the hemi may give that much more positive fuel ratio, or disengage the speed governor if desired. Personally I'm not sure I would want to do anything that would void the warranty, but it's only a matter of time before someone comes out with a blown 300C.

While I'm still on the subject, has anyone ever heard of advancing cam timing on pushrod engines? I have only heard of this technique on imports, and I believe the tradoffs for more HP were heat and lower gas milage. Last thing, just getting a stock hemi to breath better with a K & N or Airraid high flow filter, and possibly a throtle body spacer or mass flow sensor might add between 15-20 ponies. Whenever anyone actually completes a performance mod, then we'll have more to go on.

 

[fathemi]

We'll get some mods sooner or later, but testing them might even be a little bit of a headache. I highly doubt that the 300C will let you dyno it properly in the current configuration. It'll probably detect the rear wheels spinning and shut you down, 'cause the fronts aren't moving.

Technology. . . looks like the first mod will be the "shut off ESP completely" mod.

 

[3SRT4ME]

Earlier this week I inquired when Kenne Bell's SC would be available for the 300C and this was the E-mailed reply that I recieved from the company.

"We are still having problems calibrating the electronics and we will not
release any product unless it is bulletproof. We have been making good progress these last few months but unfortuantly this process has been very slow and very hard to
come up with firm dates because their is so many differences in the Hemi computer. We appreciate your patience and your inquiry! (the kit will ballpark around $4900.00 intercooled) We will alert you via email as soon as the kit is ready !
.......we're trying as hard as possible to have something ready to release
in the next few months."

 

[MOMO]

That’s the beauty of having Mopar, I’m most anxiously awaiting their offering for the 300 and with warranty no less. Dealer installed factory warranted, what else can one ask for!

 

[3SRT4ME]

"We are still having problems calibrating the electronics and we will not
release any product unless it is bulletproof. We have been making good progress these last few months but unfortuantly this process has been very slow and very hard to
come up with firm dates because their is so many differences in the Hemi computer. We appreciate your patience and your inquiry! (the kit will ballpark around $4900.00 intercooled) We will alert you via email as soon as the kit is ready !
.......we're trying as hard as possible to have something ready to release
in the next few months."

This was from Kenne Bell, not Chrysler.

 

[MOMO]

Does Mopar offer any type of FI for the Ram 5.7 Hemi?

 

[rdmac]

perfromance mods - SC

I'm going to wait and be very cautious on performance mods. Probably just do a K&N and chip when they come out. Maybe wheels. Do not want to mess with the transmission. Would be nice if MOPAR came out with something that is covered under warranty. You know as it is 0-60s in mid 5 range and 13.9 quarters are not bad for a "family" car. To get this from MB you have to spend 100K for an AMG.

Bob

 

[Fast4Door]

I hope the SC kit comes out soon...
I'm itching to get one, and turn off a mid 12 sec 1/4 mile... IN A 4 Door...

Our other options right now would be Nitrous, but I don't know how safe that would be with the ESP system...

 

[teahead]

Wait for the SRT8, and get the SC then. They'll probably beef up the tranny and maybe rear end for the extra HP.

Imagine...440 or 450+, then add an extra 120 hp on top of that!

M5 will see taillights (and maybe keep up w/stock Viper SRT10s!).

 

[BobD]

Supercharger availability

I'm very interested in a supercharger for my 300C. I contacted Kenne Bell and they told me that they had the supercharger working on the 5.7L HEMI but were still working on the electronics (requires both engine and trans chipping). Their target platform is the Dodge Ram, but they said that once they get their electronics/calibration issues worked out, that they will look at other 5.7L HEMI applications and figure out what will work.

Here is a link to their Dodge Ram page (they got over 500HP):

http://www.kennebell.net/superchargers/dodge/hemi57/hemi57.htm

They also have a pretty good FAQ that dispells a lot of myths people have about superchargers (particularly along the "voids your warranty" and "eats your trans" lines). Anyway, I found it educational.

I contacted Whipple and they said no dice on the 300C HEMI (not even any future plans).

If anyone else has any info on supercharger availability (other than unsubstantiated rumors of future 300 models), please post here. Thanks.

Bob

 

[PR300C]

Doesn't seem that supercharger will fit under the hood of 300c ....