gear size - MustangForums.com

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

gear size

Old 12-12-2005, 03:21 PM
  #1  
slo5.0
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Default gear size

i am reading many posts where gear size is 4.11. i have a 89lx convert. 5.0 with 2.73.(hence the name slo5.0)auto.i am not into drags(ya right)but would like to feel a little more acceleration.
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Old 12-12-2005, 03:28 PM
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nitrous_bob
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Default RE: gear size

4.11's are gm gears and ford 9" gears.

the 8.8 ford is 4.10

and w/ the aod...you NEED 4.10's....3.73's are not enuff...better yes, great, no

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Old 12-12-2005, 03:36 PM
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slo5.0
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n-bob, 4.10! i had a friend with a 70 something camaro w/4.11 gears,it sounded like it was going 60 hardly moving. i'm a cheap b-----d so what will gas milage be and rpm @65mph? (225-55-16)
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Old 12-12-2005, 03:44 PM
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Default RE: gear size

at about 70 you will turn 3 grand.

mileage will suffer about probably 7 mpg from what you could currently get (assuming you get 24 mpg now, then about 17 later)

are you sure you have 2.73's? or assuming...check your door tag, under "ax" code m=2.73, z=3.08, e=3.27

3.27's were only available on aod's , and on a lot of 'verts.

both my aod cars were 3.27's...a '90 lx 5.0 'vert and a '90 GT HT.

even if you went from 2.73-3.55 you would lose about 3-5 mpg. it really is directly proportional to the gears.

i had 3.73's inboth of those aod's and hated them...the first cuz i didn't know any better, then because they were already in the 'vert and i never swapped out. i just sprayed it.

oh and probably his camaro was only a 3-speed....he was in a 1:1 gear like your 3rd gear....od is a .68:1



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Old 12-12-2005, 03:44 PM
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RacerX
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Default RE: gear size

your friend did not have over drive either. The ford AOD is famous for robbing power from yor motor!! The 3.73 are not enough. Especially with a stock motor and that AOD!! Believe us when we say to go 4.10s. You we never regret it. Good luck!!
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Old 12-12-2005, 03:54 PM
  #6  
slo5.0
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Default RE: gear size

thanks for the replies.
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Old 12-12-2005, 05:08 PM
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94black5.0
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Yes get the 4.10's I just got them on my aode and i couldnt be any happier..
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Old 12-12-2005, 06:34 PM
  #8  
88BlueGT
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Default RE: gear size

4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's 4:10's

We should REALLY REALLY REALLY make this a sticky!

AOD = 4:10's +
5spd = 3:73's - 4:10's
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Old 12-13-2005, 09:59 PM
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OneFine89Mustang
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Default RE: gear size

4:10 hands down
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