Does anyone know what method the vehicle uses to transfer power to all 4 wheels? Is it an advanced electronical system where it is possible to defeat it and put the vehicle in RWD mode (ala, the Nissan Skyline?)

Long shot, but it'd be neat for some nasty burnouts.

To create the first SRT vehicle with full-time four-wheel drive, SRT engineers developed a drive system that was lightweight, yet robust and reliable enough to handle massive amounts of horsepower and torque from the 2006 Jeep Grand Cherokee SRT8’s powertrain. One part of the equation was to create a new transfer case, combining housing components from two existing units with the upgrades needed to make it SRT-capable.

SRT engineers opted to use the front half of a Jeep transfer case chosen for its capability and light weight. It was mated to the rear half of a heavier-duty case, chosen for its ruggedness and ability to house the electronic full-time four-wheel drive system components. The transfer case output shaft was upgraded to handle high torque generated by the SRT 6.1-liter HEMI.

The result is the all-new 2006 Jeep Grand Cherokee SRT8’s unique transfer case, which provides the necessary power-handling capabilities for the Grand Cherokee SRT8 while weighing 60 pounds less than a Jeep heavy-duty case.

Under normal driving conditions, from 5 percent to 10 percent of torque is directed to the front wheels, but as much of the 6.1-liter HEMI’s torque as needed can be directed forward when additional traction or stability is required. Remaining torque is sent via a heavy-duty driveshaft designed for the European Jeep Grand Cherokee diesel model, to a Dana 44 rear differential upgraded with a larger ring gear within a new axle housing.

“We wanted the acceleration that only four-wheel-drive can provide,” said Knott. “Our goal for the 2006 Jeep Grand Cherokee SRT8 was to have a well-balanced vehicle with a high fun-to-drive quotient. The SRT-developed electronic four-wheel drive system is perfectly suited to this.”

I don't know if that information helped any, but I thought it was interesting stuff, nonetheless.

Yes, interesting... a couple of key points that strike my fancy.

1. The system is adjustable.
2. The system is electronic.

3. It appears that it is possible to, at the very least reduce the front bias to 5% -- it might be possible with modifications to decrease this to 0%.

I guess it'll take more digging.

Thanks for the info!

I agree, the center diff in my last car was electronic as well, and you can put it in dyno mode... unforutnately it made the car FWD !
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I agree, the center diff in my last car was electronic as well, and you can put it in dyno mode... unforutnately it made the car FWD !

What car was that?

Also, make sure you post your pics up in the gallery here as well, and if you know of any place you can link to us and help spread the word, we would appreciate it!

You can make any awd car 2wd crawl under there and disconnect the driveshaft to the wheels you don't want power going to. That's how they dyno some vehicles if an awd dyno isn't available! But why would you do that? AWD is the key to performance!

What car was that?

Also, make sure you post your pics up in the gallery here as well, and if you know of any place you can link to us and help spread the word, we would appreciate it!


It's a WRX, under the hood in the fuse compartment there's an empty slot labeled "FWD". I threw in a 20 amp fuse and moments later experienced the most torque steer I've ever felt in my life.
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It's a WRX, under the hood in the fuse compartment there's an empty slot labeled "FWD". I threw in a 20 amp fuse and moments later experienced the most torque steer I've ever felt in my life.
wow haha I didn't know that... interesting.

I really think the point is to let the street get wet then challenge any two wheel drive to a race . anything!!!!!!!!!!!!!!!!!!!!!!