Gt500 SC on s550

Wondering if anyone else has seen the department of boost kit to install a gt500 supercharger on our cars. Could be a really cost effective system

http://www.departmentofboost.com/vbull/showthread.php?683-GT550-S550-Coyote-Stage-I-III-Kits

That looks pretty cool. I'm kinda interested. It would be nice if someone with supercharging experience would chime in and give their opinion.

They did a great job with the gt450 kit, which was for the 05-10 4.6 3v mustang. I would love to bolt a gt550 kit on my car. The mp122 off the 07-12 gt500 is plenty of umff for a coyote. DOB is pretty active over on s197forum

I'm interested as well. I have a 2010 GT500 too that I upgrade the blower on so I have the stock one sitting on the shelf.

DOB is on this forum [MENTION=8724]908ssp[/MENTION]

The key to that setup is their intercooler system. The stock GT500 blowers are incredible heat generators, and their system can accommodate.

Those blowers can be had really cheap these days.

Seems to me like one could prolly boost their s550 for not much more that $5500, unless you want and upgraded aftermarket gt500 unit

So from what I understand with a whipple I just need a billet oil pump gear to be safe as long as I'm not running high boost. Would that still be the case with this set up?

dentalguy said:

So from what I understand with a whipple I just need a billet oil pump gear to be safe as long as I'm not running high boost. Would that still be the case with this set up?

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Any power adder

Be nice if they came in here gave us some info on the setup.

Would any hoses or anything be needed for this system. Sorry for sounding ingnorant about supercharging.

nice find, anyone know where they are located?

SolarFlare said:

Be nice if they came in here gave us some info on the setup.

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They are not vendors here, so be tough for them to post info directly.

MyFirst5.0 said:

nice find, anyone know where they are located?

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They are in MI.


I am doing their 3V Spec R kit with a 3.4 whipple in my 08.

Strokerswild said:

The key to that setup is their intercooler system.

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Yes, this^^^^^^^

The stock GT500 blowers are incredible heat generators, and their system can accommodate.

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This is a bit of an un-earned "myth" the M122 has. This is from the GT550-S197 FAQ's. It the same for the S550's except the HP numbers will be a bit different. Which is irrelevant to the topic at hand.

“Why would I want to use one of those “junk” stock GT500 M122 blowers?”

Out there in internet land the stock 07-12 blowers (2.0L Eaton M122’s) are commonly referred to as “Heat-ons” because highly modded GT500’s that are still running M122’s have high intake air temperature (IAT) problems. The high IAT problem in this situation is because of many factors. Yes, the M122 is not as efficient at compressing air as let’s say a Twin Screw blower (a Whipple for example). But the M122 is not a horrible blower by any means. When the GT500 crowd goes looking for more power out of their stock M122 they start by speeding it up…….a lot. On a stock GT500 the M122 spins at 15,625rpm which is right in its “sweet spot” and it doesn’t make a ton of heat. When the GT500 guys go for big power out of the M122 they first bump it up using a smaller upper pulley to 18,750rpm, which is not in its sweet spot anymore. And it really starts to make some heat. The next step is to add a 10% overdrive lower pulley which spins the blower at 19,875rpm. Now they’re making a lot of heat. The next step after that is to run a 15% overdrive lower pulley which spins the blower at 20,325rpm. Which makes a TON of heat. And all of those blower speeds are based on them not spinning the motor past 6,250rpm. If they raise the motors rev limit (most do) the blower spins even faster. There are guys out there spinning their stock M122 at 23,000rpm!!!! Some of these guys are spinning their M122’s 50% over their “sweet spot”. It’s no surprise that they don’t perform very well and produce a lot of heat. Complaining about a blower spinning nearly 50% faster than its sweet spot and making a ton of heat is like spinning your motor to 9,000rpm and complaining when parts come flying out of it.

A GT550-S197 kit making 550rwhp spins the M122 at 15,826rpm. That is right in the M122’s sweet spot and spinning at almost the exact same speed as stock GT500’s. That makes for a very “happy” blower with low IAT’s and very little parasitic loss.

The M122 is not a “junk” blower. There are no junk blowers out there (that we know of). The problem people run into is they try and use the wrong blower for their goals. Different blower designs, sizes, etc do different things better than others. But it mostly comes down to size (displacement). If you try and get more power out of a blower than it was designed for it will give you problems, it really is that simple. The M122 is VERY “happy” making 550rwhp on a Coyote. And it remains happy all the way up to about 610rwhp. You could spend more money and run a 2.3L TVS, 2.3L Whipple, 2.3L Edelbrock, 2.8L Kenne Bell, etc. and at 550rwhp (the effective octane limit of the Coyote, more on that here) won’t see any measurable performance advantage over the M122. So who wins? The guy who spent less money and went with the M122? Or the guy who went with the other ones? We say the guy making the same 550rwhp with no sacrifices for less money…..wins.

There is a horsepower level where the M122 won’t be big enough and getting into something else is the smart move. But 95% of people never go for that kind of power. And for those that do at some point can put anything from a 2.3L TVS to a 4.5L Whipple right on the GT550-S197 manifold. No need to get a completely different kit.