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Old 12-14-2010, 12:00 PM   #1
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Manual to Auto transmission conversion for 03 Cobra......

Ok, this is just a thought but does anyone know how much or what this entails. Has anyone done this? What are your thoughts?
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Old 12-14-2010, 12:02 PM   #2
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Re: Manual to Auto transmission conversion for 03 Cobra......

lots of work. why go to auto though?
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Old 12-14-2010, 12:03 PM   #3
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Re: Manual to Auto transmission conversion for 03 Cobra......

Tons of people have made this swap but I'm not at all familiar with it. Check out SVTPerformance for some of the guys over there. I don't know of anyone on this forum that has done anything like this.
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Old 12-14-2010, 12:03 PM   #4
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Re: Manual to Auto transmission conversion for 03 Cobra......

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lots of work. why go to auto though?
Drag Racers tend to swap to Autos for consistency and other reasons.
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Old 12-14-2010, 12:06 PM   #5
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Re: Manual to Auto transmission conversion for 03 Cobra......

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Drag Racers tend to swap to Autos for consistency and other reasons.
This would be my reasoning for the swap. Take human error right out of the equation! It is much more efficient and much more consistent in 1/4 mile drags!

I know it will take some of the fun out of driving, but again it will be faster!

I will check out the link you sent!

Thanks
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Old 12-14-2010, 12:12 PM   #6
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Quote:
Originally Posted by drusmith

This would be my reasoning for the swap. Take human error right out of the equation! It is much more efficient and much more consistent in 1/4 mile drags!

I know it will take some of the fun out of driving, but again it will be faster!

I will check out the link you sent!

Thanks
No it won't be faster but your right you will get more consistent times. All be it slower. You won't get the torque in an auto. I've changed an auto to a manual and it was a lot of work. Pay someone else to do it.
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Old 12-14-2010, 12:18 PM   #7
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Re: Manual to Auto transmission conversion for 03 Cobra......

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No it won't be faster but your right you will get more consistent times. All be it slower. You won't get the torque in an auto. I've changed an auto to a manual and it was a lot of work. Pay someone else to do it.
Thanks for the info! And yes I would have Paul's High performance do the install, FOR SURE!!!!!
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Old 12-14-2010, 01:41 PM   #8
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Re: Manual to Auto transmission conversion for 03 Cobra......

You will lose hp/tq at the rear wheels as it takes more power through the auto than the T-56.

If you are is a drag race only car, sees very very little street driving then it can be the way to go. I personally would never do it to my car as I love shifting, but you are dead on with consistency.
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Old 12-14-2010, 01:45 PM   #9
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Re: Manual to Auto transmission conversion for 03 Cobra......

i would never give up the standard in my fox. i love it! but the consistency is nice with an auto. gonna be quite a project i'm sure. good luck!
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Old 12-14-2010, 01:53 PM   #10
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Re: Manual to Auto transmission conversion for 03 Cobra......

I dont think ive ever heard of somebody going from manual to Auto, the only way that I could see your shifts being faster than a manual is if you put a porsche PDK transmission in the car...i believe thats the only current auto transmission faster than a MT.
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Old 12-14-2010, 01:57 PM   #11
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Re: Manual to Auto transmission conversion for 03 Cobra......

there are many reasons to choose auto over manual for both performance and comfort. Some perhaps have injurys or issues where they cant shift and an auto works while others do it at the drag strip as when done right its faster
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Old 12-14-2010, 01:57 PM   #12
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Re: Manual to Auto transmission conversion for 03 Cobra......

manual would be faster. but he is looking for the consistency here.
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Old 12-14-2010, 02:09 PM   #13
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Re: Manual to Auto transmission conversion for 03 Cobra......

A super expensive auto would end up being better and faster im sure but I just couldnt give up shifting
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Old 12-14-2010, 02:09 PM   #14
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Re: Manual to Auto transmission conversion for 03 Cobra......

Its mainly for the 1/4 drags. I would like to be in the low 10s. Going auto takes Human (my) error out of the equation and I can focus on traction. All the top dogs at the stripe have auto, very seldom you find a crazy man shifting them gears more efficiently then an auto. I have seen it and let me tell you it is impressive!

I guess I might be a little lazy too! LOL JK, its for the drags!!!!
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Old 12-14-2010, 02:11 PM   #15
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Re: Manual to Auto transmission conversion for 03 Cobra......

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A super expensive auto would end up being better and faster im sure but I just couldnt give up shifting
You got it! Well said! You have such vast amount of knowledge! LOL
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Old 12-14-2010, 02:53 PM   #16
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Re: Manual to Auto transmission conversion for 03 Cobra......

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there are many reasons to choose auto over manual for both performance and comfort. Some perhaps have injurys or issues where they cant shift and an auto works while others do it at the drag strip as when done right its faster
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Old 12-14-2010, 11:22 PM   #17
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Re: Manual to Auto transmission conversion for 03 Cobra......

It's a whole lot easier to go from standard to auto. All you need is the tranny , tranny wire harnes, shifter & cable, flexplate and maybe driveshaft. Your computer already has the program for the electronics of the tranny programed in it. The starter should inerchange you may have to put a spacer shim on it.
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Old 12-15-2010, 04:31 PM   #18
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Re: Manual to Auto transmission conversion for 03 Cobra......

hey dru i live in illinois and have an 03 mach1 auto.... you have a 6spd i want to swap you want to swap. let me know if your interested. my 4r70w maybe a little weak for your setup but if you want to get it performance rebuilt and stuff youll be fine ive even got the B&M ratchet as well let me know
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Old 12-18-2010, 11:47 AM   #19
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Re: Manual to Auto transmission conversion for 03 Cobra......

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hey dru i live in illinois and have an 03 mach1 auto.... you have a 6spd i want to swap you want to swap. let me know if your interested. my 4r70w maybe a little weak for your setup but if you want to get it performance rebuilt and stuff youll be fine ive even got the B&M ratchet as well let me know
Alot of people have made respectible power on the 4r70w.
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Old 12-19-2010, 08:57 PM   #20
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Re: Manual to Auto transmission conversion for 03 Cobra......

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Originally Posted by black98gtvert View Post
hey dru i live in illinois and have an 03 mach1 auto.... you have a 6spd i want to swap you want to swap. let me know if your interested. my 4r70w maybe a little weak for your setup but if you want to get it performance rebuilt and stuff youll be fine ive even got the B&M ratchet as well let me know
I will get back to you on this for sure! it wont be till summer if I do this swap! i will do more research as well! Thank you for the offer!
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Old 12-19-2010, 09:34 PM   #21
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Re: Manual to Auto transmission conversion for 03 Cobra......

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No it won't be faster but your right you will get more consistent times. All be it slower. You won't get the torque in an auto. I've changed an auto to a manual and it was a lot of work. Pay someone else to do it.
depends on the power level, once you hit low 11's high 10's the auto 99 out of 100 times with the right converter will beat the stick car. But I am not giving up my 6 speed in my cobra for a few 10ths. I love banging the gears. It is not all that hard if you go with a c4 manual valve body. PA makes some of the best with a life time warranty. Make sure to get a transbrake if you are going to do it, especially with slicks. But if you go auto o/d, it will require a control module to help shift it, i dont know if the stock cobra computer can be programmed or not, have to check and find out.
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