top speed 4:10's in 4th ????????

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chrisbudl1

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Dec 21, 2003

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springfield MO

Aug 21, 2005

#1

• Aug 21, 2005

• #1

My 97 only wants to go up to 120 or so. thats about 6000 rpm in fourth. does that sound right? I think something is up with my car somewhere?

 

missouri_guy197

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Aug 31, 2002

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St. Louis, MO

Aug 21, 2005

#2

• Aug 21, 2005

• #2

6800rpms in 4th gear with 4.10's should take you to about 127mph...

120mph should be about 6400rpms in 4th...

 

SVT98Snake

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Apr 15, 2005

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OK, USA

Aug 21, 2005

#3

• Aug 21, 2005

• #3

chrisbudl1 said:

My 97 only wants to go up to 120 or so. thats about 6000 rpm in fourth. does that sound right? I think something is up with my car somewhere?

Click to expand...

Speedo may not be calibrated correctly??

 

missouri_guy197

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Aug 21, 2005

#4

• Aug 21, 2005

• #4

Possibly...

Chris, did you use the white speedo gear or a speedcal to calibrate your speedometer?

 

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chrisbudl1

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Dec 21, 2003

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springfield MO

Aug 21, 2005

#5

• Aug 21, 2005

• #5

missouri_guy197 said:

6800rpms in 4th gear with 4.10's should take you to about 127mph...

120mph should be about 6400rpms in 4th...

Click to expand...

Good, I thought something was wrong with my car. it should still pull in fifth then right. what ratio does 5th end up with, with the 4:10's?

 

missouri_guy197

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#6

• Aug 21, 2005

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

Good gear comparison webpage

 

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99blkcobravert

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Apr 25, 2005

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Vancouver, WA

Aug 21, 2005

#7

• Aug 21, 2005

• #7

Do you have a chip or tune that removes the speed limiter in the EEC?

 

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chuckstang95

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Nov 1, 2004

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Boston

Aug 22, 2005

#8

• Aug 22, 2005

• #8

After a bunch of highway blasts, I have decided I do not like 410s on the highway because I can no longer keep it in 4th gear. You have to shift into 5th at about 125, and that means if your racing at around 110 or more in 4th your way up there in the revs and once you shift into 5th, you lose ALOT of acceleration. Oh well, now the fun just stops at 125 lol instead 150 or 160 or whatever...I would not know

 

missouri_guy197

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Aug 23, 2005

#9

• Aug 23, 2005

• #9

If you aren't ahead by 125 then you lost and should probably slow down because you aren't going to catch them anyways...

Besides, there's no point to going that fast on the streets...

 

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chuckstang95

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Aug 24, 2005

#10

• Aug 24, 2005

• #10

lol
well hey now, when your going against an 03 you need every bit of power from every gear hahaha

 

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chrisbudl1

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Dec 21, 2003

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springfield MO

Aug 24, 2005

#11

• Aug 24, 2005

• #11

basically, I run away from most, until the top of fourth, then it is about time to let off anyways, and then some of the cars pass me. But yeah 125 in a 60, and coming up on traffic, better have good brakes. just curious, I was told that I should still hit 154 in fourth, and thought because of bad vibrations, the car was looseing power. This is where a blower comes in to play right, and maybe some cams? anybody have any extra money? chris

 

missouri_guy197

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Aug 24, 2005

#12

• Aug 24, 2005

• #12

Nope, with 4.10's you'll top out at 126-127...it's the way the gearing works, but in 5th you'll be able to go past 152 since the car will still pull in 5th with the 4.10's where with stock 3.27's it won't pull in 5th after a certain speed...

 

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chrisbudl1

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Aug 24, 2005

#13

• Aug 24, 2005

• #13

is that when you hit the salt flats?? what kind of space do you need for that and to stop?

 

Iwvustang

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Ann Arbor, MI

Aug 25, 2005

#14

• Aug 25, 2005

• #14

chrisbudl1 said:

My 97 only wants to go up to 120 or so. thats about 6000 rpm in fourth. does that sound right? I think something is up with my car somewhere?

Click to expand...

If I knew the ratio on your 4th gear I could probably give you an estimate.

 

missouri_guy197

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Aug 25, 2005

#15

• Aug 25, 2005

• #15

Iwvustang said:

If I knew the ratio on your 4th gear I could probably give you an estimate.

Click to expand...

Um....all mustang 4th gears are 1:1 if they are manual transmission...

 

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chrisbudl1

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Aug 25, 2005

#16

• Aug 25, 2005

• #16

anybody ever get a chance to totaly open up your cars, with plenty of room to accelerate, and decelerate?

 

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c.wood

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Aug 26, 2005

#17

• Aug 26, 2005

• #17

That sounds about right. I run a Tremec 5 speed in my Capri, and I go through the traps (at the end of the 1/4 mile) at about 106 turning 5,800 RPM with a 235/60/15 drag radial (a 26.1" tall tire, about the same diameter as your tire.

 

tomustang

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McLean Hospital

Aug 27, 2005

#18

• Aug 27, 2005

• #18

127 sounds about right for 4th.

 

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chrisbudl1

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springfield MO

Aug 27, 2005

#19

• Aug 27, 2005

• #19

from reading your responses, I think the cobra's allright. I did turn the driveshaft three times, to get the vibrations down, that was a pain, in the driveway. Thanks for all the help, that gear comparison page was very informative. chris

 

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chuckstang95

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Nov 1, 2004

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Boston

Aug 28, 2005

#20

• Aug 28, 2005

• #20

I just used to like how with my 327s I could be in 4th gear going 120 and not have to keep my revs at 5k and more. Honestly Im too scared to shift into 5th at 125ish and keep my foot planted.
Oh and yes good brakes do help...I recommend powerslots slotted rotors and hawk pads.(nice improvement over stock)