4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

3.90's installed!

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Old 01-10-2007, 09:43 PM
  #21  
JJ03MustangGT
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Default RE: 3.90's installed!

sorry that was suppose to be me, but i guess my g/f was on my comp. today......she has 4:10's and luvs em
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Old 01-10-2007, 10:27 PM
  #22  
Colorado_Mustang
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Default RE: 3.90's installed!

Anytime you have metal sliding against metal, there will be a break in period. Basically, this is the time the metal is wearing itself against the mating surface creating a new surface that will have less friction.

The break in instructions would have been with the gears. Richmond recommended 3 heat cycles total.
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Old 01-10-2007, 10:36 PM
  #23  
rbstang
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Default RE: 3.90's installed!

ORIGINAL: V8Cody

All SN95's that I am aware of, have 2.73's.
Did you not read?

ORIGINAL: rbstang

sn95 mustangs came with 2 options
A) 2.73 gears maybe a t-lok.. dunno...
B) 3.27 gears and T-Lok
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Old 01-10-2007, 10:37 PM
  #24  
mustang430
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Default RE: 3.90's installed!

with the new gears, would you put imaginary miles on your car???? im thinkin off gettin new gears but i dont wanna put "fake" miles on my car?
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Old 01-10-2007, 10:38 PM
  #25  
Colorado_Mustang
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Default RE: 3.90's installed!

Recalibrate the speedo. Your computer will thank you.
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Old 01-11-2007, 01:44 AM
  #26  
jmmorgan82
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Default RE: 3.90's installed!

lets put it like this. my speedo was reading almost 30mph off before I fixed it. Your resale value will like you more if you correct it. I mean if your putting 1,000 miles on the odometer every 700-750 actual miles.. That will add up very quick.
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Old 01-11-2007, 01:22 PM
  #27  
fausty
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Default RE: 3.90's installed!

what if you have an electronic cluster...is there a way to stop putting imaginary miles on the car
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Old 01-11-2007, 04:25 PM
  #28  
4.698GT
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Default RE: 3.90's installed!

ORIGINAL: rbstang

sn95 mustangs came with 2 options
A) 2.73 gears maybe a t-lok.. dunno...
B) 3.27 gears and T-Lok
Three different rear options for the 94-98 models. All had traction lok.
2.73-super highway gears
3.08-super highway gears
3.27-super highway gears.

From the factory, Ford should have at least had 3.73s in the GTs and 3.90/4.10s in the cobras

Congrats on the new gears. Changes the whole attitude of the car. I wish I went with 4.30s though
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Old 01-11-2007, 10:26 PM
  #29  
jmmorgan82
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Default RE: 3.90's installed!

ORIGINAL: fausty

what if you have an electronic cluster...is there a way to stop putting imaginary miles on the car
get a tuner to correct the gear ratio
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