Today, I went to the track with our 2011 Mustang GT auto.

Only new mod was our aluminum 1-piece driveshaft. Previous mods were Stainless Works Headers, Catted Mid-Pipe, and Catback, 4.10 Ring & Pinion, Livernois Motorsports Dyno Tune, and skinnies/drag radials.

The car still has the stock airbox and no suspension mods other than a swaybar relocation bracket.

The next mods will be a converter and CAI.

The weather was better than previously

Density Altitude - 1939
Air Temp - 76 Degrees F
Barometric Pressure - 29.97 Inches Hg
Relative Humidity - 48%

Best ET 11.69 @ 117.55 mph



Also ran 11.70, 11.72, and 11.75 @ 117 mph

For those that think we have an optimistic dyno, the car doesn't even make 400 RWHP.

Regards,

Rick LeBlanc
Livernois Motorsports

 

Very good runs

 

Not bad.

I still wonder if you couldn't get there with just a high stall converter instead of the 4.10 gears.

If I were to do it I wouldn't want to go that low of a gear, I do too much highway driving and would want to keep the highway gas mileage up.

 

Mileage didn't change much and it's still very drivable on the highway with the 4.10's and 6-speed auto.

We're installing a 4,000 rpm stall next week.... should be interesting.





-Rick

 

Who's doing the converter for you???

 

With all your mods and your passion for 1/4 mile...is there reason you got a auto?

 

Best way to go drag racing.

 

Quicker shifts with the auto.
Good job guys keep it up

 

I was told we can't reveal that yet. Still need to do some testing, then I will post up.

More consistent, easier on parts, quicker... We had a 2005 Mustang GT that made 800 RWHP with a manual trans and it was hard to get down the track and broke parts. We had a 2007 Mustang GT auto that made 540 RWHP and went 10.7 @ 131 mph on 20's and could be driven anywhere and never broke anything.

There were a few similarly modded manual trans cars there tonight and they weren't running close to the times I was.

-Rick

 

Oh snap. Us auto drivers can not be called gay anymore since we will be ***** slapping those ***** i mean stick drivers.

 

autos are way faster at the track. this isnt a new thing. they dont dyno as high. but way faster. my track car is an auto.

 

Great numbers. Good luck with the new converter.

 

Couldn't find the numbers before the shaft.

How much did it improve?

 

Hard to say what the driveshaft gained, because the weather was better than last time out.

Previous best was 11.90 @ 116

Previous post with video and track times can be found here

-Rick

 

Thanks for the link Rick.

I see what you mean. Might have half a tenth there if all else was equal but the weather.

The much lighter shaft with less joints has to be worth something in ET.

A back to back dyno run would easily show the rwhp gains. May not be the point of your mission though.

Best of luck for future runs/data.

 

Awesome times! Great work guys!

 

As a stick driver, I appreciate the slammin' shifting of the auto. No way could I shift that fast. Then again, unlike an auto-trans, I CAN read my mind and so I know not to shift in the middle of a high-g turn. That's my main reason for going MT this time around. If they'd add paddle shifting or a true automatic clutch in lieu of a torque-converter I might be persuaded to come to the dark side.

 

Why do you always feel the need to try and justify the fact that you drive an automatic? You should check out my mom's Toyota Camry, the auto in that thing is sweet

 

I guess i get the same joy as stick drivers get out of slammin auto drivers or i just have a real small *****.