SN95 Mustang 1994-2004 Mustangs Member Tech & Restoration Discussion

Help me to decide!! 3.73 or 4.10

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Old 3/15/13, 12:34 PM
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Help me to decide!! 3.73 or 4.10

Well guys i've been reading a lot of this topic, but I’ve not found any convincing arguments due to the variety driving conditions, I have an automatic 2000 GT, and I planning to get the gears first and for the near future SCT tuner and then an Off road x pipe all depending money circumstances.

I DD 28 miles (90% highway) 55 mph average, my principal concern is about gas mileage, so I would like to know in your experience is that a representative increasing in MPG??

Last edited by mdelao; 3/15/13 at 12:35 PM.
Old 3/15/13, 01:16 PM
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The auto has a higher ratio than the manual making the 4.10s a better fit, there will be some compromise with the gear change but imo it isn't horrible. my only worry is if you with 3.73s it just isn't going to give you what you are looking for/expect with a gear change and you will be wanting more gear. 3.73s with the higher ratio auto just fall a little short to make it worth the effort. some may say go 3.90 but at that point just with 4.10s they are that close.
Old 3/15/13, 03:58 PM
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I have auto, 4:10 gears, full bolt ons. Daily driver. I drive about the same as you. I get 18mpg. Go 4:10s. Wont be disappointed.
Old 3/16/13, 09:49 AM
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Originally Posted by witwicky01
I have auto, 4:10 gears, full bolt ons. Daily driver. I drive about the same as you. I get 18mpg. Go 4:10s. Wont be disappointed.
18 is my current mileage, I read somewhere that I can gain some extra miles with a proper tune, is that possible?
Old 3/16/13, 06:14 PM
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Yes, it's true, but the biggest factor in mileage is your right foot
Old 3/16/13, 07:38 PM
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Originally Posted by bluethunderhorse
Yes, it's true, but the biggest factor in mileage is your right foot
Dam I have a problem with my right foot, so lets imagine that I keep driving in same way, how worts would be?
Old 3/16/13, 07:51 PM
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You'll lose probably 2-3 mpg
Old 3/20/13, 10:36 PM
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I love my 4.10's and I would recommend them to everyone! MPG isn't too bad but if you're like me living in LA Cali. Gas prices will make you think twice when you get your foot in it
Old 3/21/13, 10:34 PM
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I have the same issue and can't decide. I have plans of adding FI so should I go with 3.73 or 4.10s... The sn95 need a lot of help so I am not sure if 4.10s and a turbo would be too much. I know if it was one of the recent models 3.73 would be ideal but what do you guys think??
Old 3/21/13, 11:00 PM
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4:10s
Old 3/22/13, 08:51 PM
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I have an auto, 2002, full bolt ons and 3.73 with a custom tune on my trans as well as my motor so im saving gas lol either way youll be happy with a gear change
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