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Old 07-24-2009, 04:44 AM   #1
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5 Speed or 6 Speed

I am thinking about putting a 6 speed in my 99 Cobra. I was just wondering what everyones ideas were on this.
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Old 07-24-2009, 10:26 AM   #2
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Re: 5 Speed or 6 Speed

sounds good to me
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Originally Posted by sti2gsxr
There was a case of the stuff stacked at the end of an aisle. Definately not cold or in the cooler. Also it was over $7 for the two bottles.
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Old 07-24-2009, 10:30 AM   #3
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Re: 5 Speed or 6 Speed

I like the idea as well. Nothing like having that better cruising gear...
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Old 07-24-2009, 10:35 AM   #4
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Re: 5 Speed or 6 Speed

its all about what you want out of it and the gearing of it.

The ford spec 5th is .85 or so and 6th is .63~ (around there)

in your 5 speed final 5th gear is around .68 (whats that only .05 dif...) basically its not much difference in that respect, but a little lower 5th is not to bad overall

the viper/vette spec T-56 usually use .50 final drive that gives you much better gas mileage and lower rpms cruising oh why ford why didnt we get that

the 2010 gt500 FINALLY did in their 6 speed...
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Old 07-24-2009, 10:38 AM   #5
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Re: 5 Speed or 6 Speed

It's not always about the highest gears...sometimes it makes sense for the lower gearings...Without looking up the specs, the T56 could have a lower first gear ratio which would greatly help any out of the hole traction issues that may exist.
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Old 07-24-2009, 10:47 AM   #6
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Re: 5 Speed or 6 Speed

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It's not always about the highest gears...sometimes it makes sense for the lower gearings...Without looking up the specs, the T56 could have a lower first gear ratio which would greatly help any out of the hole traction issues that may exist.
specially when swapping rear end gears... i know the viper ones start with a 2.6 or 2.9 (i've seen both... or at least somewhere in that range) and the t5 had 3.35 while the t45 had a 3.37... so if first is completely useless after going to 3.73 or 4.10 gears... that lower first gear will help a lot. i have a 2.73 rear end and first is already to short

EDIT: don't exactly quote me on the ratios listed, its just what i could find in a couple seconds
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1994 GT, stock gears, stock shifter, stock engine, stock rims (or knock offs).

Quote:
Originally Posted by sti2gsxr
There was a case of the stuff stacked at the end of an aisle. Definately not cold or in the cooler. Also it was over $7 for the two bottles.
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Old 07-25-2009, 02:46 AM   #7
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Re: 5 Speed or 6 Speed

Appreciate all the ideas and help. I am still in Iraq for a few more months so I got time to think about which way I am going with it.
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Old 07-25-2009, 02:58 AM   #8
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Re: 5 Speed or 6 Speed

Is it a direct swap or is there some modifications that need to be done?
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Old 07-25-2009, 10:13 AM   #9
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Re: 5 Speed or 6 Speed

the t-56 has worse gears in first compared to a T-5 (at least the ones with 3.31 first) not sure about the others but it will hurt you out of the hole compared to others. I have no idea about the T-45 or HD version or 3650s gear ratios
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Old 07-25-2009, 11:13 AM   #10
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Re: 5 Speed or 6 Speed

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Originally Posted by 99 SVT Cobra View Post
Is it a direct swap or is there some modifications that need to be done?
going by your user name i would you have a 99 cobra... and i don't really know how this would go... you might just have to change some stuff to the 03/04 parts since they had a t56 in them. but honestly I don't really know, i do know on 64-98 you have to do some trimming and custom mounting though.
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It's cheaper to be beat a viper than to lose in one.

1994 GT, stock gears, stock shifter, stock engine, stock rims (or knock offs).

Quote:
Originally Posted by sti2gsxr
There was a case of the stuff stacked at the end of an aisle. Definately not cold or in the cooler. Also it was over $7 for the two bottles.
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Old 07-28-2009, 12:14 AM   #11
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Re: 5 Speed or 6 Speed

Well thanks for the help, it will help me make the decision.
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