Stock gears or no?

A

Amaritto

Founding Member

Jan 9, 2001

222

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The Motor City

Jan 18, 2008

#1

• Jan 18, 2008

• #1

I just purchased an 04 GT from a dealership today and think this car has gears. Everything on the car seems to be stock except for a magnaflow cat back.

Speedo seems to be about 10mph off at 70mph in 5th gear. Rpm's at 70 in 5th are 2100-2200. Is there a chart for the GT's that would list the right ratio for this?

Been over 6 years since my last post on this site, but im baaaaack. lol

 

BlackGT4.6

New Member

Jun 15, 2005

103

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In.

Jan 18, 2008

#2

• Jan 18, 2008

• #2

Is the car a 5 speed or auto? If its a 5spd I would say they are stock gears.

 

A

Amaritto

Founding Member

Jan 9, 2001

222

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The Motor City

Jan 18, 2008

#3

• Jan 18, 2008

• #3

5 speed. Cousin has 03 GT and at 80mph his rpms are the same as mine at 70.

 

laserstang21

New Member

Feb 4, 2007

79

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luling, La

Jan 19, 2008

#4

• Jan 19, 2008

• #4

i have stock gears and at 70 im hittin bout 2100-2200

 

BlackGT4.6

New Member

Jun 15, 2005

103

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In.

Jan 19, 2008

#5

• Jan 19, 2008

• #5

I would say with about 90% assuredness that they are stock.

 

BigDave06

New Member

May 22, 2007

39

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Felton, DE

Jan 20, 2008

#6

• Jan 20, 2008

• #6

I see near 2500 around 70 with 4.10's a 3650

 

merc123

Active Member

Jan 27, 2003

420

2

39

North GA

Jan 21, 2008

#7

• Jan 21, 2008

• #7

Stock.. with the possiblity of 3.55's.

For the TR-3650 use these ratios: 3.38, 2.00, 1.31, 1.00, 0.67
http://www.allfordmustangs.com/Detailed/608.shtml

The 3.55's will turn ~2179 RPM's with stock tire sizes

 

Pearl02

Member

Nov 27, 2004

496

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16

Kansas City

Jan 21, 2008

#8

• Jan 21, 2008

• #8

I have 3.73's and at 70mph my tach is around 2200rpms. My stock gears(3.27) at 70 would tach around 1900rpms. I would say you have 3.73's. You could always jack the car up and turn the tire and count the rotation of the driveshaft. That would tell you what gears you have. Pearl02.

 

A

Amaritto

Founding Member

Jan 9, 2001

222

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0

The Motor City

Jan 21, 2008

#9

• Jan 21, 2008

• #9

I just have to jack this thing up and actually get a for sure answer today. I am ok with them being stock, but not ok with my speedo being off 10mph...

Thanks for the graph, that is exactly what I was looking for. According to it, I should be stock but like you say, maybe 3.55s.

Will update today. Thanks again

 

S

Smokeurhonda

New Member

May 1, 2003

457

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Maryland

Jan 21, 2008

#10

• Jan 21, 2008

• #10

Just do the digital speedo for accurate RPM's, maybe somebody had a set of whiteface gauges in it and screwed up the needles when replacing? I snagged a set of gauges off a dealer car one time and screwed up the fuel gauge on it cuz I ran outta time. Car came back in for service a month later and I saw the gas light on while it was showing a quater tank. Opps

 

forum155pl

New Member

Jul 11, 2006

520

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the 509

Jan 21, 2008

#11

• Jan 21, 2008

• #11

car salesmen LOVE to say that cars like ours have gears... ive heard that from multiple salemen when when i was shopping for a stang..

not that i'm doubting that your car doesnt have em.

 

Skidzz

Tinkerbell

Apr 11, 2005

328

1

19

Salt Lake City, UT

Jan 21, 2008

#12

• Jan 21, 2008

• #12

I think it sounds like you have 3.55's, although I don't know why anyone would spend the money for such a small change...

 

Back in Black

Don't feel bad. Almost 3 years on here and the onl

Founding Member

Oct 21, 2002

128

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16

Pittsburgh.. Ford salesmen at Woltz & Wind For

Jan 23, 2008

#13

• Jan 23, 2008

• #13

Sounds like sombody's ready to put in some 4.10's!!!