410 or 390?

ascoldasice17

New Member

Mar 30, 2005

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Mays Landing, NJ

Aug 11, 2007

#1

• Aug 11, 2007

• #1

any opinions or pros or cons.....all are welcome

 

B

BaXTeR3221

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Jan 12, 2004

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Orange County, NY

Aug 11, 2007

#2

• Aug 11, 2007

• #2

I'm gonna guess your talking about gears? Really depends what you want out of your car and mods you have or are planning to get. You need to give us some more info to get some opinions.

 

ascoldasice17

New Member

Mar 30, 2005

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Mays Landing, NJ

Aug 11, 2007

#3

• Aug 11, 2007

• #3

just wanted some input.....its really gonna be a N/a summer car..not really daily driven.....but i know 3.90s are not a
real popular way but then i hear about gas wit 4.10s...just wanted a lil input

 

Superhereaux

chicks make me feel inadequate

Founding Member

Jul 30, 2002

538

3

59

South Texas

Aug 11, 2007

#4

• Aug 11, 2007

• #4

the difference in 3.90's and 4.10's is minimal

just get the 4.10's. your mileage will increase around town and if you can stay under the speed limit highway mpg won't change much, if at all

 

B

BaXTeR3221

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Jan 12, 2004

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Orange County, NY

Aug 12, 2007

#5

• Aug 12, 2007

• #5

I had 3.90's in my fox for a while, i liked them a lot. If your not going with any forced induction, might as well go with the 4.10's. These modular motors benefit from the extra gear to get into the powerband.

 

gtstangau

Member

Jan 9, 2006

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Alabama

Aug 12, 2007

#6

• Aug 12, 2007

• #6

4.10's won't get much worse mileage than 3.90's if your staying n/a then go with the 4.10

 

E

Eng503trk

New Member

Aug 11, 2007

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Fredericksburg, VA

Aug 12, 2007

#7

• Aug 12, 2007

• #7

anything more than 3:73's in a n/a, daily driven car is a waste of gas.

 

04YELLOWGT

Active Member

Jun 29, 2005

1,135

2

39

Indiana

Aug 12, 2007

#8

• Aug 12, 2007

• #8

I have 4.10s in my car and that was the first mod I ever did. I never really noticed a drop in mpg with just the gears, maybe 1-2 mpg less but that just can be different drving conditions.

 

BlackGT4.6

New Member

Jun 15, 2005

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In.

Aug 12, 2007

#9

• Aug 12, 2007

• #9

I did 3.73s and was disappointed and went with 4.10s. Not a huge difference in 3.90s and 4.10s. I recommend 4.10s. I love mine.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Aug 12, 2007

#10

• Aug 12, 2007

• #10

i have 3.90's. i will be swapping to 3.73's for more 1/4 mph. otherwise the 3.90's are great

 

R

rlntlss

New Member

Jul 6, 2007

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Aug 13, 2007

#11

• Aug 13, 2007

• #11

a year ago i almost bought 3:90's for mine but the tech guy at sct said he could not correct my speedo for this gear it might have changed by now but if your using a tuner u might ask

 

TrueBlue03

Member

Dec 9, 2003

372

3

18

Bay Area, CA

Aug 13, 2007

#12

• Aug 13, 2007

• #12

I read some more of these threads on gears on here and another forum that discussed quality/reliability/whining problems that come along with some of the brands that make 3.90's. Is that true or did i hear bullsheait?

 

langod

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Apr 1, 2005

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Londonderry, NH

Aug 13, 2007

#13

• Aug 13, 2007

• #13

TrueBlue03 said:

I read some more of these threads on gears on here and another forum that discussed quality/reliability/whining problems that come along with some of the brands that make 3.90's. Is that true or did i hear bullsheait?

Click to expand...

Gear whine is all about the installation, not the hardware. I have Motive 3.90s -- have had em in for 2 years and they don't whine. I've heard Ford gears that whined as well as Motives and other brands. Just make sure you hire a good, EXPERIENCED installer.

There used to be no real difference between Motive 3.90s and FRPP (Ford) 4.10s -- in fact Motive MADE the gears for Ford. I've heard that within the last year or so, Ford slightly changed the design on the gears so that the FRPP gears are slightly easier to set right on install and Motive no longer makes them for Ford.
Just food for thought -- Motive is still a very good brand.

 

langod

New Member

Apr 1, 2005

34

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Londonderry, NH

Aug 13, 2007

#14

• Aug 13, 2007

• #14

sorry, double post.

 

mustangkid05

New Member

Mar 10, 2006

199

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Aug 13, 2007

#15

• Aug 13, 2007

• #15

4.10s na

 

whyask

New Member

Apr 4, 2005

735

1

0

Sacramento

Aug 14, 2007

#16

• Aug 14, 2007

• #16

I have had 4:10s and 3:90's

Pros 410s power band quicker and they ride great in the city
Cons SUCK MONEY AZZ ON THE FREEWAY and anything above 130 your tranny starts to hurt if you have a 5 speed

Pros 390s They dont kill on the freeway but can still get you into the power band just as quick
Cons YOU MIGHT AS WELL GET 410s if your N/A LOL

 

TrueBlue03

Member

Dec 9, 2003

372

3

18

Bay Area, CA

Aug 14, 2007

#17

• Aug 14, 2007

• #17

langod said:

Gear whine is all about the installation, not the hardware. I have Motive 3.90s -- have had em in for 2 years and they don't whine. I've heard Ford gears that whined as well as Motives and other brands. Just make sure you hire a good, EXPERIENCED installer.

There used to be no real difference between Motive 3.90s and FRPP (Ford) 4.10s -- in fact Motive MADE the gears for Ford. I've heard that within the last year or so, Ford slightly changed the design on the gears so that the FRPP gears are slightly easier to set right on install and Motive no longer makes them for Ford.
Just food for thought -- Motive is still a very good brand.

Click to expand...

i did not know this. good info. thanks.

 

twogts4us

15 Year Member

Apr 1, 2004

4,188

12

79

Dunedin, FL

Aug 14, 2007

#18

• Aug 14, 2007

• #18

Got 3..73 and 4.10 and wish both had 4.10 (although my 3.73 is a good excuse to add a blower...!)
If staying NA, 4.10 is the way to go, especially with the Mod motor...it begs for increased torque down low...

 

karkrazy

New Member

May 18, 2005

9

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0

Aug 14, 2007

#19

• Aug 14, 2007

• #19

I looked up to see what the 4.6 godfather, Sean Hyland, suggested for gears. He

recommends for 96-98 2v 4.6 3.73 and for Cobras 4.10. His reason was even

though the 2v revs to 6000 its power drops out by 5000, so the car is out of

breath way too soon with 4.10s.