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5.0L V8 Technical Discussions Any questions about the 'Coyote' engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!

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Old 04-25-2014, 04:42 PM   #1
HRDWRK
 
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Default How much and how hard is it to ...

... change the rear gear from 3.31 to 3.73?
Is it just changing the gears in the housing of does it require to reprogram anything? I am talking about the manual transmission.
The story is: I am looking for a gray 2014 GT with 3 different specific options one being the rear 3.73. I can't find one in gray but I can find it in silver. I found one gray with the other two options but without the 3.73.

Thanks for your input.
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Old 04-25-2014, 04:49 PM   #2
Mishri
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It requires a re-program or your speedometer will be off.

Dealership quoted me $1,000 to do it (not including parts).

I had a guy do it for me for $250. (install) and I used my SCT handheld tuner to change the gear ratio to 4.10s. SCT Tuner is like $400. But it also lets you tune the car (more HP, voids warranty on engine)
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Old 04-26-2014, 11:26 PM   #3
dominant1
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You should have it done by a professional, gears are very specific and if not installed near perfect they will make noise and fail over time!
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Old 04-26-2014, 11:30 PM   #4
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Thanks.
It is not a concern for me any more since as you may have seen in my other post, I ended up buying one with 3.73 gears.
Thanks again.
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Old 04-26-2014, 11:30 PM
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