5-speed Drivers With 3.73's

Sonic04GT · Jul 5, 2012

I shouldn't even be asking this as I've driven a 5spd Mustang for 6 years but...

At what speed do you guys normally use 5th gear? Do you use it around the city?

I have 3.73's and at 45mph I'm around 2200 RPMs in 4th, and 50mph is about 2500 RPMs. Seems a little high.

So I normally shift to 5th but that puts me around 1400-1500 RPMs and I feel it may be putting more stress on the motor. Is this too low of an RPM? Should I stick to using 4th gear only at 50mph and below and burn up that gas?

usaf_branham · Jul 5, 2012

i shift into 5th at 45

mransr · Jul 5, 2012

yup, I have 3.73 and 5th is usually good at 45-50 mph

phatboy5015 · Jul 5, 2012

It's the long ass 5th gear in the 03-04s. It's like they made a 6 speed, but forgot to put in a 5th gear, so they just called it a 5 speed. Lol.

No matter what rear end gears you have, 1:1 is a long way from .62:1.

apats77 · Jul 5, 2012

I use 5th as low as 40 mph as long as i know im just going to hover at 40 for a long time.

Mattstang04 · Jul 6, 2012

Im on the same page as apats77. If its a long straight drive with not alot of stops, I'll shift into 5th at 40 mph.

Sonic04GT · Jul 9, 2012

Thanks for the replies. My car, with the AC on at least, feels very sluggish around those speeds in 5th gear. With the AC off I can usually shift to 5th around 45ish without issue.

I had some bucking issues a while back and someone mentioned I was at too low of an RPM but I had been driving like this for a long time. I was also getting an O2 sensor error around that time, for a rear sensor that's turned off in the tune. Now the bucking seems to have stopped and the code doesn't come back anymore for some reason. However, sometimes in 5th gear with the AC on it feels like it might want to start bogging/bucking at city speeds.

03_TrueBlue_GT · Jul 9, 2012

I usually do the same as Apats77 when I know I will be going 40mph for a while. Like when I'm on my way to work, the last leg of the trip is a road thats 35mph so I usually go 40 in 5th gear. Sometimes I just keep it in 4th and its at 3700 rpms when Im going 40mph, exhaust sounds damn good at that rpm lol but not good for gas mileage but fuggit.

phatboy5015 · Jul 9, 2012

03_TrueBlue_GT said:
Sometimes I just keep it in 4th and its at 3700 rpms when Im going 40mph

What gears do you have???

03_TrueBlue_GT · Jul 9, 2012

I have 3.73's, did I type 3,700rpms? Oops I did not mean to type that, when Im in 4th at 40mph its at 1,900 or so rpms, my bad lol.

mransr · Jul 9, 2012

FWIW...mine is right at 1800rpm at 50mph in 5th with 3.73s, a T-45 and 275/40x17s

ItsStock02 · Jul 15, 2012

I go into 5th as low as 35 all the time around town.

Tropic03GT · Jul 15, 2012

I got 4.10sin my 03 gt if I got a good stretch of no stop and goin in 5th around 40. Other wise I cruise in 4th if I'm stopping alot. Shifting gets annoying especially with 4.10s

usaf_branham · Jul 16, 2012

ehh.... dont fear the gear. band wagon = 4.10's N/A or 3.73's power adder... personally I like 4.10's power adder / 4.30's n/a

1fun281 · Jul 18, 2012

usaf_branham said:
ehh.... dont fear the gear. band wagon = 4.10's N/A or 3.73's power adder... personally I like 4.10's power adder / 4.30's n/a

Or people like me...4.30's and spray

usaf_branham · Jul 18, 2012

1fun281 said:
Or people like me...4.30's and spray

That's the spirit! If it hooks, i bet your eyes are being pulled into the back of your skull...

mransr · Jul 18, 2012

but what does not "fearing the gear" have to do with a guy that already 3:73s and was wondering when to shift to 5th???

1fun281 · Jul 19, 2012

usaf_branham said:
That's the spirit! If it hooks, i bet your eyes are being pulled into the back of your skull...

You dont even know, third and 4th gear top end best feeling in the world!

5-speed Drivers With 3.73's

Sonic04GT

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usaf_branham

mransr

phatboy5015

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apats77

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Mattstang04

Sonic04GT

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03_TrueBlue_GT

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phatboy5015

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03_TrueBlue_GT

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mransr

ItsStock02

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Tropic03GT

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usaf_branham

1fun281

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usaf_branham

mransr

1fun281

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