Top speed

[Captian_Eddie]

Anyone have an idea what your top speed is in 4th gear. Tia

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[Unclenard]

Jail?

 

[TopJimmyCooks]

I think around 115-ish?

 

[NGOT8R]

Has to be faster than 115. I hit 113 in 3rd in my Bullitt when data logging for my tunes.

 

[NGOT8R]

This video may contain some clues about how fast a GT can go at the top of 4th gear.

 

[TopJimmyCooks]

Has to be faster than 115. I hit 113 in 3rd in my Bullitt when data logging for my tunes.

Now that you mention it, I do remember noticing 125 in 4th on the uphill esses at VIR. So Yeah, I was wrong. I haven't invested in a data logger yet and I don't usually take my eyes off the road to look at the speedo. So I answered prematurely!

 

[Shift]

Looks just shy of 140 according to this video:

 

[honeybadger]

I believe it's around 144 or so?

 

[NGOT8R]

Now that you mention it, I do remember noticing 125 in 4th on the uphill esses at VIR. So Yeah, I was wrong. I haven't invested in a data logger yet and I don't usually take my eyes off the road to look at the speedo. So I answered prematurely!

No worries. Taking ones eyes off the road at any speed can be very bad, especially when running in the triple digits, so I definitely understand what you’re saying.

 

[WD Pro]

What rear gear and tyre ?

Bang those values and how fast you want to spin the motor into one of those online calculators

WD

edit : just noticed the forum this is in so deleted my comment on the D4

 

[oldbmwfan]

This can be calculated from tire size and gear ratio.

MPH = wheel rotations/minute*wheel circumference (in)*60/63360 (to convert from inches/minute to miles/hour)

wheel rotations/ minute = engine RPM/gear ratio/axle ratio, so for redline it's 8250/1.24/3.73 = 1783.7 wheel revolutions per minute

Tire circumference = diameter (26.5" per TireRack)*pi = 83.25" (NOTE this is for the GT350R; GT350 tire is smidge taller, so speed at a given RPM is slightly higher)

So MPH = 1783.7 wheel rev/min*83.25 in/rev*60 min/hr / 63360 in/mi = 140.6 mi/hr

 

[lonegunman]

140-ish. Last time I did something fun in my car I was in the 136-138 mph range when the shift lights flickered and that was set at 8K rpm.

 

[AhuraPro]

I've never gotten my car over the posted speed limit, therefore I have no idea what the top of 4th is.

#Lookinatyoustatefarm

 

[68Stang]

Upfront disclaimer *semi high jacking the thread
So what is the top speed in each gear?

 

[460Fred]

Redline in 3rd is as far as I’ve gone....in Mexico.

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