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

Why don't more of you go with 3.90s?

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Old 04-19-2006, 04:02 PM
  #21  
06mustang88
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Default RE: Why don't more of you go with 3.90s?


ORIGINAL: Stang9946

Well see i'm leaning towards 3.90s because I DON'T to a lot of highway driving. I do A LOT of stop and go driving and driving in town.
well then you should go wtih the 4.10's. (someone correct me if this statement is wrong but...)when you do gears, your mpg will go up in town. the only time it decreases is when you are on the highway. say you get 18 in town and 24 on the highway, with gears, you will get 24 in town and 18 on the highway. i forget where i've read this and why it happens, but i've seen it a couple different places. something to do with the extra shift and being in a higher gear than normal or something.
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Old 04-19-2006, 04:02 PM
  #22  
mself52
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Default RE: Why don't more of you go with 3.90s?

if im not mistaken they make them that way for durability and strength... the whine comes from thicker gear teeth.... motive and frpp are same thing
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Old 04-19-2006, 04:03 PM
  #23  
GTnAZ
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Default RE: Why don't more of you go with 3.90s?

is it true that with 4.10's you basically lose 1st gear? Meaning when you do use 1st gear the car just reves up so fast its stupid?
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Old 04-19-2006, 04:03 PM
  #24  
SilverGTV8
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Default RE: Why don't more of you go with 3.90s?

Who said anything about whining?

Do you have the whole rearend rebuilt (bearings)?

How much did the dealership get for the install?

ORIGINAL: mself52

not it doesnt cost more to have motive installed.... shims are like 2 dollars man.... i had my motives installed at the dealership and they never asked me what brand of gears they were.... if your gears whine its cuz they werent installed correctly hands down... FRPP and Motive both are great ive had both and will continue to use motive....
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Old 04-19-2006, 04:05 PM
  #25  
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Default RE: Why don't more of you go with 3.90s?

4.10's in a 4.6
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Old 04-19-2006, 04:05 PM
  #26  
06mustang88
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Default RE: Why don't more of you go with 3.90s?


ORIGINAL: GTnAZ

is it true that with 4.10's you basically lose 1st gear? Meaning when you do use 1st gear the car just reves up so fast its stupid?
no. and most of the "is it true's" are not true at all, it's all hearsay
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Old 04-19-2006, 04:06 PM
  #27  
SilverGTV8
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Default RE: Why don't more of you go with 3.90s?

Whine comes from incorrect gear meshing. It has nothing to do with the thickness of the gears.

Whine is bad..

ORIGINAL: mself52

if im not mistaken they make them that way for durability and strength... the whine comes from thicker gear teeth.... motive and frpp are same thing
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Old 04-19-2006, 04:07 PM
  #28  
SilverGTV8
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Default RE: Why don't more of you go with 3.90s?

You won't lose 1st gear it is good to about 18mph.

You will find the car a little jumpy at high rpms in lower gears (1-2)
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Old 04-19-2006, 04:08 PM
  #29  
mself52
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Default RE: Why don't more of you go with 3.90s?

i paid 380 for my install... the same amount the quoted me when i called and asked if they'd install 4.10's in my car if i had all the parts... meaning shims, bearings, and gears, gear oil, and friction modifier..... try it buddy call up a place ask them how much to install FRPP gears... then hang up ..... call back next day and ask to install motive gears..... if they tell you two differnt prices they are morons and you need to go somewhere else....
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Old 04-19-2006, 04:10 PM
  #30  
Stang9946
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Default RE: Why don't more of you go with 3.90s?

ORIGINAL: SilverGTV8

Who said anything about whining?

Do you have the whole rearend rebuilt (bearings)?

How much did the dealership get for the install?

ORIGINAL: mself52

not it doesnt cost more to have motive installed.... shims are like 2 dollars man.... i had my motives installed at the dealership and they never asked me what brand of gears they were.... if your gears whine its cuz they werent installed correctly hands down... FRPP and Motive both are great ive had both and will continue to use motive....

Motive Performance Plus gears are made with an extra strong race quality alloy. They also do NOT have a reputation such as Richmond for "gear whine". -Mustang Tuning
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