2011 Mustang GT CS Archive – Alternaitve Auto

We’re proud to announce that after spending the better part of the summer of 2010 with our 5.0L 2011 GT – we’ve come up with some very impressive Dyno and ¼ mile results.   We will now be offering our in-house developed, custom tune using SCT software and Xcal-3 flash devices loaded with our own tunes which maximize and take full advantage of premium fuels and many other performance gains.
When combined with C&L’s air-intake pipes, and a few other bolt-ons….. the resulting performance has now turned our naturally aspirated 2011 5.0L car equipped with a 6-speed automatic into a very low 12 second ¼ mile car; 12.08et @ 112.89mph to be exact On other passes its actually gone over 113mph, but a slightly slower et’s. This was achieved with a small bolt on list consisting of only a; 4.10 gear, mid-length headers, high flow cat’d X-pipe, slightly looser factory TQ converter (3200rpm stall) and a C&L air intake pipe, and our own custom tuning for 93 octane.

Also our car has achieved these impressive very low 12 second ET’s at full weight. In fact its heavier then stock due to the 20in wheels and tires at all four corners, and larger 14in “Bear” brake rotors at all four corners too. With a ¼ tank of gas in the tank, our 2011 5.0L car has weighed in at nearly 3900lbs!!

On our in house DynoJet chassis dyno this 2011 GT lays down 396rwhp. This is with the 20in wheel/tire combo and the 4.10’s in the axle (bigger rear gears can typically lower RWHP numbers). Not to shabby for an automatic car.

Alternative Auto tends to lean toward achieving impressive results with what we feel are real world street cars. Cars that everyday enthusiast will buy, drive, race and just plain have fun with all around. This is why our current 5.0 car, previous & future shop cars/projects like this will generally be un-gutted and at full normal street weight, using standard type street wheels and tires with typically a drag radial in the rears. Front runner/skinny type rims and tires seem to not be the norm amongst the average street car enthusiasts that we typically come in contact with these days. So we try to roll the same way as what appears to be the norm for most street cars and enthusiast.

Call for pricing and availability on all of our performance packages and tunes for the new 2011 GT’s.

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Update 10/20/2010

Before 10/20/2010

We have finally received our 2011 5.0L Mustang on June 29th. As might have been expected; this 2011 car is a replacement for the 4.6L 3-valve Whipple equipped 2008 GT that we needed to let go of this past winter, in order to move on to develop performance installs and above all “tuning” for the new 5.0’s. Because I grew up with “5.0’s” and consider myself a true product of the 1980’s and early 90’s, I’m going to refer to this car and all other ones like it as a “Five o”. I’m sure most would agree that this is fitting description for this car as a whole.

Our new 5.0L car is equipped with the California Special package. Only because I felt that it looked a little better overall then the normal GT’s. And as most who know me would expect… the car is Black. And also has an Automatic trans too. Which is the new 6R80 6-speed automatic. I’ve got a lot planned for this car and above all its transmission tuning.

Automatic transmissions are my favorite as opposed to manual transmissions, Automatics are truly more reliable, especially when making big power like over 500hp to 600hp+ at the flywheel. Automatics are more consistent at the ¼ mile. Automatics can be and usually are faster in straight line acceleration, especially now days with advent of the modern 5-speed and now the current 6-speed automatic’s. Automatics do not shock and hurt the driveline nearly as much as a stick shift car. This is why I usually lean toward automatics in my own cars and why I will talk about the new 6-speed first in this write up.

To me a lot of things about this new breed of 6-speed trany’s is looking real good. It has a very steep 1st gear (4.17), and also a nice 4th gear which is not the usual 1 to 1 ratio, it’s actually a 1.14 ratio. When all of this is combined and put to the right use. What will happen is ultimately it won’t need as much or as tall of a rear gear to accomplish good all around acceleration as what older 4-speed and even the recent 5-speed auto’s would have needed. Because 1st is so steep, and 4th being 1.14 ratio, it will actually continue to multiply torque while in 4th, and with 2nd and 3rd right in between there – its going to amount to some very nice and moderately close gear spreads, and not to big of an RPM drop each time it pulls a gear from 1st to 4th, (5th and 6th are overdrive gears). And also, one important thing to note too. This new 6-speed auto is probably one of the highest TQ rated intermediate sized automatics Ford as ever offered. It is rated to handle 800ft lbs of TQ. These modern 6-speed automatics are touted as offering better mileage and performance, but for me at this level of good usable forward gears, I’m more interested in what it will do for performance than MPG’s. And as long as the shifts are tuned right, I have no doubts about its ability to handle very big power with future upgrades.

As most are aware of by now the new 2011 5.0L is rated at just a touch over 400hp….. 412hp to be exact when running on premium fuels. When our new car was only one day old, and only about 50 miles on the ODO we strapped it down on our in-house DynoJet and through the automatic trans in 75 degree temps – it laid down a best of 355 rwhp and 342 rwtq. This was done in manual 3rd gear so that we could start the pull at a very low RPM and get a good HP and TQ reading across a wider RPM range. Normally on most automatics we try to do the pulls in 4th gear or whatever gear is closest to 1 to 1 ratio. But from simplicity sake and because of the low 3.15 stock rear gear, we choose to do all the pulls in 3rd for now. Had we done the pulls in 4th, I believe it would have net’d a tiny bit more rwhp.

This new 32v 5.0L generation of engines from Ford is showing a lot of promise in terms of performance. The technology put into this thing is like nothing ever before from Ford. This 5.0L on our dyno and in the real world seems to be the happiest when well over 4K rpms till about 7K !

When our new GT/CS was only one day old we took it to Milan Dragway, MI. We got lucky and the temps were in the low 70s that late June evening with very little humidity. The best run we could squeeze out of it was a 13.23 @ 108mph. 60ft’s were in the 2.0 range. At this point the car had only 213 miles on it. Not to bad for a totally stock automatic Mustang.

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