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2005-2010 Mustang Talk Forum

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Unread 03-07-2007   #1 (permalink)
gphasagt is offline Senior Member

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Default 2005 Mustang GT stock gear ratios?

i have an 05 Automatic what is my rear end gear ratio? i think i saw somewhere that the 05s have 3.55s and the 07s had 3.31 or do they all have 3.31? thanks
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Unread 03-07-2007   #2 (permalink)
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Macus is a 5 speed manual tranny with the 3.55 rear end. I think the 07's have the 3.31 rear end as an option.
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Unread 03-07-2007   #3 (permalink)
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Quote:
Originally Posted by Marcus GT View Post
Macus is a 5 speed manual tranny with the 3.55 rear end. I think the 07's have the 3.31 rear end as an option.
The 07s have 3.31 as standard and the 3.55 are opt.
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Unread 03-07-2007   #4 (permalink)
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Originally Posted by gphasagt View Post
i have an 05 Automatic what is my rear end gear ratio? i think i saw somewhere that the 05s have 3.55s and the 07s had 3.31 or do they all have 3.31? thanks
With an auto yours is definitely a 3.31.
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Unread 03-07-2007   #5 (permalink)
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Originally Posted by stlwagon View Post
With an auto yours is definitely a 3.31.
ok cool, thanks. i guess i'll look at gears now, what ratio should i upgrade to? will i notice a big difference with 3.73s?
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Unread 03-07-2007   #6 (permalink)
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There's no wrong gear ratio for a NA car (well I suppose 4.56 might be a little over the top ) I've been perfectly satisfied with 4.10.
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Unread 03-07-2007   #7 (permalink)
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stl, i've always been told not to go higher than 3.73 or i would sacrifice top speed ..what have you noticed? with 4.10 can you still hit 140 as easily? i know the acceleration has got to be wicked cause 3.73 is... but whats the down side?
 
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Unread 03-08-2007   #8 (permalink)
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stl, i've always been told not to go higher than 3.73 or i would sacrifice top speed ..what have you noticed? with 4.10 can you still hit 140 as easily? i know the acceleration has got to be wicked cause 3.73 is... but whats the down side?
130s is still doable but you do start running out of top end with the 4.10s. They are great off the line but you do end up rowing a lot of gears.
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Unread 03-08-2007   #9 (permalink)
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And how offen are you going to be running 140? Unless your running on the hi bank tracks, 80 or 90 on the interstates are about good. :hihi:
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Unread 03-08-2007   #10 (permalink)
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And how offen are you going to be running 140? Unless your running on the hi bank tracks, 80 or 90 on the interstates are about good. :hihi:
Only on those rare occasions... Like when I'm on the run after a three-state killing spree.
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Unread 03-08-2007   #11 (permalink)
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A 5 speed car can still go in the 170's with 410's, granted that it has the power to reach that mph. If anything 410's make it easier to hit 140 and I doubt with stock like power and stock gears your going to be going over 150(unless you live in germany) and with a supercharger if your out make 150 mph passes your asking to build a motor.
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Unread 03-08-2007   #12 (permalink)
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Don't for get the long roads in Arizona.
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