Mach 1 I dont know if I should get 4:10s

M

mach1 03

New Member

Oct 26, 2006

5

0

0

Oct 26, 2006

#1

• Oct 26, 2006

• #1

I have a 03 mach1 that come with 3:55 gears and i whant 4:10s but i dont whant to be at 3000 rpm at 70mph does any one know what the rpms will be at 70. its a 5 speed
thanks

 

TR03Mach1

Member

May 31, 2002

450

0

16

New Castle, Delaware USA

Oct 26, 2006

#2

• Oct 26, 2006

• #2

mach1 03 said:

I have a 03 mach1 that come with 3:55 gears and i whant 4:10s but i dont whant to be at 3000 rpm at 70mph does any one know what the rpms will be at 70.
thanks

Click to expand...

In what, 5th gear? With 4.10's and a TR3650 5-speed, you would be turning about 2600 RPM in 5th gear at 70mph. If it's an automatic, I'm not sure.

 

C

C-dub

New Member

Dec 4, 2004

19

0

0

Oct 26, 2006

#3

• Oct 26, 2006

• #3

i should know this one, but this should help you out

http://www.svtoa-atlanta.org/cgi-bin/trans.cgi

c-dub

 

bigcat

start with the upper hole, and if more traction is

May 1, 2005

3,015

1

79

7200 feet

Oct 26, 2006

#4

• Oct 26, 2006

• #4

dont fear the gear!!!

 

red302

Founding Member

Nov 21, 1998

881

0

17

Peru, IL

Oct 26, 2006

#5

• Oct 26, 2006

• #5

Go with the 4:10's. I drove mine to Mustang week this year, (3,000 mi. round trip.) and was wishing I'd have put the 4:10 gears in all the way. Especially driving through the mountains. In the Mach, I was downshifting to 4th gear alot. One of the other guys that went also, had those gears in his GT, and thought they were great. Better acceleration, and almost no difference in gas mileage either.

 

JOEGTS

New Member

Jul 23, 2005

153

0

0

Port Saint Lucie, FL

Oct 27, 2006

#6

• Oct 27, 2006

• #6

mach1 03 said:

I have a 03 mach1 that come with 3:55 gears and i whant 4:10s but i dont whant to be at 3000 rpm at 70mph does any one know what the rpms will be at 70. its a 5 speed
thanks

Click to expand...

I have 4:30s and at 80mph I'm at 3000rpm. I love the gear!!

 

Give Me TP

Member

Jun 17, 2004

936

0

16

Republic of Texas

Oct 31, 2006

#7

• Oct 31, 2006

• #7

TR03Mach1 said:

In what, 5th gear? With 4.10's and a TR3650 5-speed, you would be turning about 2600 RPM in 5th gear at 70mph. If it's an automatic, I'm not sure.

Click to expand...

Also with the T3650 in 5th gear, you will not get to 3000 rpm while cruising until you are going 90 mph. Get at least 4.10's. I use them in my Mach 1 as a daily driver and wouldn't have it any other way.

 

FoxRod87

Active Member

Feb 1, 2006

243

1

27

Carolina

Oct 31, 2006

#8

• Oct 31, 2006

• #8

Just installed 4.10s last week and also got an xcal2. Drove the car all weekend with the speedo off. Cause I had to wait to get the used xcal2 unlocked to adjust it. So I went to all ford mustangs dot com. and found out what rpm I would be running at 70 and it said I would be turning 2554 rpms. but I got it set last night and found at 70 mph I was turning only 2300 rpms in 5th. So if I was you I would go with 4.30s then you might turn 2500rpms at 70. Just my little input.

 

M

muscletangracer

New Member

Feb 22, 2003

255

0

0

Toledo,Ohio

Nov 14, 2006

#9

• Nov 14, 2006

• #9

I have 4.30s in my Mach and 70 mph is @ 2,500 rpms. For what it's worth I chose the 4.30 gears because I drive the car less than 2,000 miles a year and like to go to the 2 Ford races around here in the summer. With the 4.30 gears and stock tires you are pulling in 4th gear pretty good when you cross the stripe. With 4.10s you would I believe be just ready to shift into 4th. at the stripe.

 

O

OxMox

turkeysammichesonhisface

Mar 31, 2005

0

0

0

Palm Harbor, FL

Dec 7, 2006

#10

• Dec 7, 2006

• #10

you'll be happier with a 3.73 set-up for daily driving, racing it you'll proabably want a 4.10 or 4.30 or higher. I'm actually ahppy with my 3.55's, but when i switch to 31 splines i'm going to switch to 3.73

 

djlethalwang

New Member

Nov 18, 2004

138

0

0

Amarillo, TX

Dec 7, 2006

#11

• Dec 7, 2006

• #11

I seem to be one of the few that is completely happy with the stock 3.55s.

I had a Mustang GT before and swapped the gears for 4.10s. It felt faster, but I still lost to the same cars by the same amount, it seemed like. It was also an automatic, so I know it wasn't my driving....

 

O

OxMox

turkeysammichesonhisface

Mar 31, 2005

0

0

0

Palm Harbor, FL

Dec 8, 2006

#12

• Dec 8, 2006

• #12

i'm happy with the 3.55's, they pukll when there supposed to and there basically perfect for the car. i'm only switchin to 3.73 when i do the axles cause it's there and i can do it and it wount be a huge difference, just a little extra bump

 

djlethalwang

New Member

Nov 18, 2004

138

0

0

Amarillo, TX

Dec 8, 2006

#13

• Dec 8, 2006

• #13

OxMox said:

i'm happy with the 3.55's, they pukll when there supposed to and there basically perfect for the car. i'm only switchin to 3.73 when i do the axles cause it's there and i can do it and it wount be a huge difference, just a little extra bump

Click to expand...

I agree 100%

I don't blame you on the swap, cause I know i'd more than likely go with some 3.73s as well. Personally, I wouldn't go any higher than that cause I do eventually plan on running some serious boost further down the road.... and learning from my friend, 4.10s don't work too well with 14psi on a turbo, and 700 rear wheel. LOL

 

O

OxMox

turkeysammichesonhisface

Mar 31, 2005

0

0

0

Palm Harbor, FL

Dec 11, 2006

#14

• Dec 11, 2006

• #14

LOL, yeah I don't think they will. I want to do boost, like a nice 8psi procharger kit... but I keep hearing that you have to build the internals if you want it to last for a while (i plan on keeping this car for as long as possible, even when i get another daily driver)

 

93 teal terror

Founding Member

Jul 13, 2001

971

62

69

Durham N.C.

Dec 11, 2006

#15

• Dec 11, 2006

• #15

I've put 24k miles on my mach since feb. with 4.10's and wouldnt have anything less. At first I wasnt to keen on the steep gears but now I love them. Now I just have to get some 3:73s in the 5.0 to replace the 2:73's (lame)

 

Give Me TP

Member

Jun 17, 2004

936

0

16

Republic of Texas

Dec 11, 2006

#16

• Dec 11, 2006

• #16

If you consider switching to 3.73's instead of 4.10's or higher, I would suggest you just keep the stock 3.55's in the car. There's not enough difference in those ratios to justify the expense involved.