Difference b/w a 5 speed and a 6? - FMVperformance.com : The site for all your Ford Mazda and Volvo needs
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post #1 of 14 (permalink) Old 07-24-2005, 12:56 AM Thread Starter
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Difference b/w a 5 speed and a 6?

Hi all,

A friend of mine asked me what is the real difference b/w 5 and 6 speed cars, besides the fact that 6 speed has one extra gear.

Any thoughts? Educated guesses?
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post #2 of 14 (permalink) Old 07-24-2005, 01:07 AM
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Re: Difference b/w a 5 speed and a 6?

better gas mileage, improved performance if you know how to shift. coool factor


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post #3 of 14 (permalink) Old 07-24-2005, 01:28 AM
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Re: Difference b/w a 5 speed and a 6?

That's like saying what's the dif between a 3 sp and a 6... and the answer is 3 gears. Without looking at the exact cars, you can't really say more than that. Some have higher or lower ratio's, some have better gas mileage, it gives you more flexibility, some have closer or further spaced geras... there's a hundred reasons.
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post #4 of 14 (permalink) Old 07-24-2005, 02:10 AM
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Re: Difference b/w a 5 speed and a 6?

A 6-speed is 120% the fun of a 5-speed :P


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post #5 of 14 (permalink) Old 07-24-2005, 02:29 AM
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Re: Difference b/w a 5 speed and a 6?

One is a 5 speed and the other is a 6 speed. Also the 6 speeds are alot more fun to drive.


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post #6 of 14 (permalink) Old 07-24-2005, 05:08 AM
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Re: Difference b/w a 5 speed and a 6?

About $1200.*

My buddy's WS6 for example.* The 5th and 6th gears are more highway crusing gears.* He can do 80mph at ~3000 rpm in 6th where as my Mazda3 at 80mph is doing closer to 4000 rpm in 5th.*

That gives him:
Higher speed at lower RPM
Less engine noise
Better fuel economy than a 5spd Camaro at the same speed.

Did you see BMW is coming out with a M6 with a 7spd V10.

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post #7 of 14 (permalink) Old 07-24-2005, 09:42 AM
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Re: Difference b/w a 5 speed and a 6?

I still haven't been able to go into 6th in the RX-8 (barely 5th either) because of this stupid breaking in time... I just really wanna floor this thing!


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post #8 of 14 (permalink) Old 07-24-2005, 07:17 PM
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Re: Difference b/w a 5 speed and a 6?

[quote author=velocity_r3d link=topic=25979.msg352433#msg352433 date=1122212541]
I still haven't been able to go into 6th in the RX-8 (barely 5th either) because of this stupid breaking in time... I just really wanna floor this thing!
[/quote]

Um... why wouldn't you go into 6th during break in. If anything you should spend MORE time in 6th, so as to not rev it so high. (although I disagree with that method as well)
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post #9 of 14 (permalink) Old 07-25-2005, 09:27 AM
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Re: Difference b/w a 5 speed and a 6?

[quote author=ADaughen link=topic=25979.msg352390#msg352390 date=1122196107]
About $1200.

My buddy's WS6 for example. The 5th and 6th gears are more highway crusing gears. He can do 80mph at ~3000 rpm in 6th where as my Mazda3 at 80mph is doing closer to 4000 rpm in 5th.

That gives him:
Higher speed at lower RPM
Less engine noise
Better fuel economy than a 5spd Camaro at the same speed.

Did you see BMW is coming out with a M6 with a 7spd V10.
[/quote]

Mercedes has had 7 speed transmissions in a few of their cars for quite a while.

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post #10 of 14 (permalink) Old 07-25-2005, 10:06 AM
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Re: Difference b/w a 5 speed and a 6?

The gearing ratios are more important than the number of gears, but generally, 6-speeds are designed to have closer ratios so you can stay closer to the redline when shifting, and thus continuously produce the most power when accelerating hard. It only really helps in cars with peaky power curves and high redlines, like the RX-8, S2000, etc - cars with flatter torque curves, like the Mustang GT, do fine with 5-speeds. Older American cars used to do fine with 3-speed automatics just because of the sheer amount of torque coming out of the engine.

6-speeds can also help with fuel economy when cruising in top gear - the C6 Corvette's 6th gear has a ratio of 0.50 to 1, allowing it to get very good highway gas mileage because it can keep its revs nice and low, despite having a huge V8. You could do this with a 5-speed as well, but putting a big gap in between gears causes a sudden loss of acceleration when you have to shift into that fuel-economy gear. A 6-speed lets you get a more gradual transition that lets you accelerate effectively all the way up to crusing speed.
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