GT Performance Mods 2005+ Mustang GT Performance and Technical Information

max speed in gears auto

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Old 7/20/05, 11:39 PM
  #21  
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Originally posted by Weedo@July 20, 2005, 10:02 PM
If I wasn't so tired right now, I'd probably figure this out with my 4.10's...
1st Gear Speed = (6,250 rev/min)(60 min/hr)(1/3.22 1st gear)(1/4.10 axle ratio)(0.0013477 mile/rev) = 38 MPH
2nd Gear Speed = (6,250 rev/min)(60 min/hr)(1/2.29 1st gear)(1/4.10 axle ratio)(0.0013477 mile/rev) = 54 MPH
3rd Gear Speed = (6,250 rev/min)(60 min/hr)(1/1.54 1st gear)(1/4.10 axle ratio)(0.0013477 mile/rev) = 80 MPH
4th Gear Speed = (6,250 rev/min)(60 min/hr)(1/1.00 1st gear)(1/4.10 axle ratio)(0.0013477 mile/rev) = 123 MPH
5th Gear Speed = (6,250 rev/min)(60 min/hr)(1/0.71 1st gear)(1/4.10 axle ratio)(0.0013477 mile/rev) = 174 MPH
Old 7/21/05, 07:44 AM
  #22  
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Originally posted by Weedo@July 20, 2005, 11:02 PM
If I wasn't so tired right now, I'd probably figure this out with my 4.10's...
If you post your tire size and which trans you have I can whip up a chart for you
Old 7/21/05, 09:41 AM
  #23  
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Originally posted by 2MFF@July 21, 2005, 6:47 AM
If you post your tire size and which trans you have I can whip up a chart for you
I have the stock wheels tires (235/55/17) (for now) and the auto trans.

Thanks Gearhead for the #'s! Crazy to see 2nd gear is actually done before 60!
Old 7/22/05, 11:51 AM
  #24  
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Originally posted by 2MFF@July 18, 2005, 11:51 PM
I made a gear ratio calculator when I was planning my 6 speed swap in my 66 mustang. If you want a chart similar to this one

http://www.2mfffabshop.com/mycar.htm

let me know and I'll run the numbers and post the chart.
2MFF,

Could you please do the same for a stock 2005 GT w/ 5 speed.

The stock numbers are:

1st Gear: 3.33 : 1
2nd Gear: 2.00 : 1
3rd Gear: 1.41 : 1
4th Gear: 1.00 : 1
5th Gear: 0.67 : 1

Final Drive (Rear End): 3:55 : 1

Tires: 235 / 55 / 17

It will be much appreciated !!!!!
Old 9/5/05, 05:49 PM
  #25  
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Originally posted by mlcrisis@July 22, 2005, 11:54 AM
2MFF,

Could you please do the same for a stock 2005 GT w/ 5 speed.

The stock numbers are:

1st Gear: 3.33 : 1
2nd Gear: 2.00 : 1
3rd Gear: 1.41 : 1
4th Gear: 1.00 : 1
5th Gear: 0.67 : 1

Final Drive (Rear End): 3:55 : 1

Tires: 235 / 55 / 17

It will be much appreciated !!!!!
I wanted to know the same thing and I found the answer on caranddriver.com:
http://www.caranddriver.com/article.asp?se...8&page_number=4

DRIVETRAIN
Transmission: 5-speed manual
Final-drive ratio: 3.55:1, limited slip
Gear, Ratio, Mph/1000 rpm, Max test speed
I, 3.34, 6.6, 40 mph (6000 rpm)
II, 2.00, 11.0, 66 mph (6000 rpm)
III, 1.32, 16.7, 100 mph (6000 rpm)
IV, 1.00, 22.0, 132 mph (6000 rpm)
V, 0.67, 32.8, 149 mph (4550 rpm)
Old 9/5/05, 06:16 PM
  #26  
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Originally posted by 2MFF@July 21, 2005, 8:47 AM
If you post your tire size and which trans you have I can whip up a chart for you
How about for the 2006 with 18" rims I think the tires are 235s and a Auto trns which has 3.31 Axle
Old 9/5/05, 08:36 PM
  #27  
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I think sixty six can answer this question by being there done that. Tony what was the tachometer reading at 145 MPH? I was wondering what it would read flat out.
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