Gears - 3.73 or 4.10????

A

AndyGT

New Member

Jul 27, 2004

27

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0

Oct 7, 2004

#1

• Oct 7, 2004

• #1

My shop told me that 3.73 gears were best for a street only 2004GT automatic.

Any comments?

 

0

007

Founding Member

Jan 29, 2002

3,287

24

69

Broke

Oct 7, 2004

#2

• Oct 7, 2004

• #2

AndyGT said:

My shop told me that 3.73 gears were best for a street only 2004GT automatic.

Any comments?

Click to expand...

Please try using the search function.

 

Wolfhound

Founding Member

May 24, 2002

1,046

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0

Space Coast, Florida

Oct 7, 2004

#3

• Oct 7, 2004

• #3

I would go with the 4.10's. I drove in my friends car with 4.10's and I have 3.73's and what a difference.

 

Dark Knight GT

I can't get it up......ok that didn't sound right.

May 26, 2003

3,653

2

56

Ozark, Missouri

Oct 7, 2004

#4

• Oct 7, 2004

• #4

There have been many good articles on this and the debate between 4.10s and 3.73s has in a 4.6ltr GT has been going on for about the last 8 years. If you use the search feature, you'll find many helpful articles.

Here is my input. For an automatic that is n/a, I'de say 4.10 or 4.30 gears. I have 4.30 gears and I like them. It should be noted that if you do not have a transmission cooler for your automatic transmission, I'de get one right away as heat is the number one killer of automatic transmissions and with the new gears, you'll need a cooler to keep the transmission temperatures down. Another neccessity will be either a EEC flash or a sport chip. You will need this to calibrate the speedometer of your car as the automatics are no longer done by a speedometer gear and you will also need it to correct your shift points.

If you have any other questions, just ask.

 

2k2fourpointsix

New Member

Apr 7, 2003

210

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Quincy, MA

Oct 7, 2004

#5

• Oct 7, 2004

• #5

Unless you are going with a power adder, go witht the 4.10's or you will regret it. Trust me, especially with an auto. Which shop did you end up going to for the gears?

 

crew_dawg16

New Member

Apr 25, 2004

445

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DeKalb, IL

Oct 7, 2004

#6

• Oct 7, 2004

• #6

do a search, this has been discussed way too many times already

 

A

Arboc Gnatsum

New Member

Oct 4, 2004

2

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0

Oct 7, 2004

#7

• Oct 7, 2004

• #7

You've got to remember the biggest downside: Your going to be revving a lot higher at cruise....IF say you are doing 2k RPM at 60MPH now with stock gears, expect to be around 24-2800 with 4.1;s

 

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AndyGT

New Member

Jul 27, 2004

27

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0

Oct 7, 2004

#8

• Oct 7, 2004

• #8

Thanks for the replies.......I am going with 3.73s

I would have gone with 4.10s if I raced it.

Will post result next week when I get it done.

$325 for labor.

 

GTvert01

New Member

Nov 24, 2003

636

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0

West Plains, MO

Oct 7, 2004

#9

• Oct 7, 2004

• #9

Your shop sucks.You should have gotten 4.10s regardless since you have an auto.Ford of all places put my gears in for $200.

 

w00t

New Member

Mar 26, 2004

334

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0

Arlington TX

Oct 7, 2004

#10

• Oct 7, 2004

• #10

.


<----------------------------------------------------------

Get the 4.10's!

Don't mean to bash but we have answered this too many times.

We need a sticky that says "PLEASE USE SEARCH FIRST THIS FOURM BEFORE POSTING"

 

Tylerb59

Banned

Mar 7, 2003

1,895

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0

Arlington, WA

Oct 7, 2004

#11

• Oct 7, 2004

• #11

>>4.10<<

 

donyw

Member

Dec 31, 2003

64

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7

Long Island, New York

Oct 7, 2004

#12

• Oct 7, 2004

• #12

FRPP even recomends switching to 4.10s in the Autos.

 

Cobra Jay

Member

Apr 7, 2004

889

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16

Motor City

Oct 7, 2004

#13

• Oct 7, 2004

• #13

The only reason your shop told you to go with 3.73's is so they could get you for another $325 labor(plus a new set of gears) when you come back and have them put in 4.10's when you are dissapointed with them and find out they were wrong in the first place.

Do yourself a favor and use the search option and read ALL THE THREADS about choosing a gear ratio. There are 100's of them I'm sure.

 

speed545

Member

Mar 21, 2003

458

1

18

Montreal, canada

Oct 7, 2004

#14

• Oct 7, 2004

• #14

AndyGT said:

My shop told me that 3.73 gears were best for a street only 2004GT automatic.

Any comments?

Click to expand...

Surely been discussed many times but with auto, 4.10 is the minimum way to go. Beleive me, i ve been trough that.

Your shop sucks big time.

 

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01TrueBlueCobra

New Member

Feb 16, 2004

336

1

0

somewhere

Oct 7, 2004

#15

• Oct 7, 2004

• #15

If you get 3.73's for a AUTO you will regret it. If you had a 5spd I wouldn't even care but you have a Auto 4.10's are a must. Don't fear the gear man. Also you will need a programmer or a chip because your shift points and speedo will be all out of wack.

 

mcmmotorsports

Member

Apr 12, 2004

689

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17

Danbury, CT

Oct 7, 2004

#16

• Oct 7, 2004

• #16

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