Drivetrain Clutch, Torque Converter, Transmission, Driveline, Axles, Rear Ends

6 speed difference

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Old Mar 18, 2007 | 09:14 AM
  #1  
andremvp13's Avatar
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6 speed difference

Is the 6 speed better then a auto and a 5 speed? And why and what is the big difference. I'm not stupid I know the what is a manual trans and auto trans, just want to know the performance difference and such.
Old Mar 18, 2007 | 09:24 AM
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Main difference is who does the shifting.
Auto = computer
6-speed = you

Many consider 6-speeds to be more fun to drive on the streets, but they are also more difficult to launch at the track. As far as performance - the transmission does not change the power the motor has, BUT a 6-speed will always have higher RWHP dyno numbers than an auto, because it is a more efficient transmission and doesnt have a torque convertor to suck up power.

But, even though auto's will dyno lower - many say that their superior launches and better consistency make up for that...
Old Mar 18, 2007 | 09:36 AM
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manuals are more efficient because there is no slipping across the clutch like there is across a torque convertor
the difference between a 5 speed and a 6 speed
the 6 speed has an extra overdive gear
4th gear is 1:1
5th gear is .74:1 i think
and 6th gear is .5:1

the benefit of this is you can use a larger rear end ratio and you dont have to scream down the highway at 3000 rpm's
Old Mar 18, 2007 | 09:49 AM
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Originally Posted by respectirocz
manuals are more efficient because there is no slipping across the clutch like there is across a torque convertor
the difference between a 5 speed and a 6 speed
the 6 speed has an extra overdive gear
4th gear is 1:1
5th gear is .74:1 i think
and 6th gear is .5:1

the benefit of this is you can use a larger rear end ratio and you dont have to scream down the highway at 3000 rpm's

Could you break that donw a lil better for me. Thanks.
Old Mar 21, 2007 | 08:26 PM
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basically the manual trans just has extra gears for better crusing. as with an old school 4 speed ( munice m21, m22 etc), 4th gear is a 1:1 ratio. with our trannies (t56), 5th and 6th gear are overdrive gears. our sixth gear is .5:1 as opposed to an old trany which only has a 1:1 ratio. so instead of turning like 3000 driving on the highway, we would be more in the range of 1500-1600. hope that clears it up for you a little
Old Mar 22, 2007 | 12:34 AM
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Thanks. It does. But if anyone thinks I didn't get everything just let me know.
Old Mar 22, 2007 | 12:38 AM
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I would not say the 6-speed is "better" than an auto, just different. They both serve a purpose.
Old Mar 22, 2007 | 12:50 AM
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Originally Posted by chuck
I would not say the 6-speed is "better" than an auto, just different. They both serve a purpose.
Okay please explain.
Old Mar 22, 2007 | 04:19 AM
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In terms of toughness and handling abuse, the T56 is better stock for stock vs the 4L60, by far.



Edit:I'm a tard for posting after working a mid shift.

Last edited by theroad64; Mar 22, 2007 at 07:47 AM.
Old Mar 22, 2007 | 05:56 AM
  #10  
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What are you takin about. We're talkin about the differnce about 6 peed, 5 speed and auto, in the camaro. And the pros and cons. You have any your own two cents, chip in.
Old Mar 22, 2007 | 08:22 AM
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in the 4th generation camaro you wont see a 5 speed unless u have a 6 cylinder so forget that

as for the 6 speed and the gear ratio's

4th gear is 1:1 which means for every one rotation of the engine the tranmission tranmits one rotation to the driveshaft
it also means for every one foot lb of torque sent to the tranny sends one foot lb of torque out

5th gear is .74:1 which means for every one rotation of the engine, blah blah blah, 1.33 rotations of the drive shaft, and for every one foot lb of torque sent, .74 foot lbs come out
(did i get that right?)

6th gear is .5:1 which is easier to understand, every one rotation of the engine blah blah blah 2 rotations of the drive shaft and every one foot lb of torque sent to the tranny, .5 ft lb comes out

torque is rotational force, it is what essentially moves your car
when your car is at a complete stop it is harder to push than if it was rolling
this is why we need a 2.66 1st gear, that huge multiplication of torque makes it easier to start moving the car

i hope that helps
Old Mar 22, 2007 | 03:00 PM
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6 speed is a lot better .. my wife and kids can't drive standard so i always know where my car is
Old Mar 22, 2007 | 08:21 PM
  #13  
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Originally Posted by UnstableSS
6 speed is a lot better .. my wife and kids can't drive standard so i always know where my car is
Nice!

I think what you're also trying to find out here is "why" the 6-speed (T56) is (considered) "better" than the A4 (4L60E) or M5 (T5).

That is because it is built TOUGH . The factory torque rating on the T56 is ~450 lb-ft of torque, vs. the 4L60E's rating of about ~350 lb-ft, and the T5 probably has a rating around ~300 or less? Even the upgraded 4L65E (which came out in the C6 'Vette) only had its torque rating raised to approx. ~385 lb-ft .

Also, consider this ..... the T56 is the same transmission used in all C5's, C6's, and Z06's, as well as Mustang Cobras, Ford GT, and the Viper! There are even heavier duty variations available (ie: Viper) but in "stock" (F-body) form, they're still very strong. Again, rated to ~450 lb-ft!!

THAT is why the 6-speed is "better" .
Old Mar 22, 2007 | 08:43 PM
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benefits of a 6 speed. All around more fun, better gas mileage, less components related to the tranny, so its less maintainance than an a4

The problems with the manuals, is more room for error when racing, suck in stop, and go traffic. A lot harder on othe components, like rear end, and engine if you over rev. Also the auto can be made much faster than a manual w/ the addition of a stall converter
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