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Shifting my 05 M6

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Old Feb 26, 2008 | 01:57 PM
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Default Shifting my 05 M6

Hey guys have a question. All my pasts Vettes C3-5 have been autos. This C6 is my first manual.

After just watching some U tube vids here kind of brought something to my attention. Fast shifting from 1st to 2nd and even to 3rd were very quick in the vids.

On mine there is no way you could shift so fast. Example: Taking off in 1st and bringing here up to around 5 grand then shift right into 2nd I'll have to let the rpm's drop before she will allow me to shift.

Is this normal. Now shifting 3rd to 4th and so on will shift "quick".

Just wondering, thanks
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Old Feb 26, 2008 | 02:33 PM
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Originally Posted by my2005c6
Hey guys have a question. All my pasts Vettes C3-5 have been autos. This C6 is my first manual.

After just watching some U tube vids here kind of brought something to my attention. Fast shifting from 1st to 2nd and even to 3rd were very quick in the vids.

On mine there is no way you could shift so fast. Example: Taking off in 1st and bringing here up to around 5 grand then shift right into 2nd I'll have to let the rpm's drop before she will allow me to shift.

Is this normal. Now shifting 3rd to 4th and so on will shift "quick".

Just wondering, thanks

I am not sure what you mean. In every single vehicle I have ever driven, shifting faster was a simple matter of applying more force to the shifter. I can shift as fast as I like, however I also realize that the faster I shift the more damage I will be incurring on my synchronizers and shifter fork, so for most of my driving I shift just fast enough for the revs to match, and no faster.
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Old Feb 26, 2008 | 02:41 PM
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Well, if I shift at a high rpm, say around 5k, push the clutch in and shift quick enough not to let the rpm's drop, its very hard to shift and sometimes she actually "grinds". But again, thats only going from 1st to 2nd and sometimes into 3rd. Only at high rpm's.
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Old Feb 26, 2008 | 02:56 PM
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It shouldn't do that with an upshift. My experience is that the harder you drive it the more it likes it. Sometimes third is a bit tricky to find but 1 - 2 shift should be just as fast and smooth as you like. You are sure you are timing the clutch release well with the shifting motion?

Might want someone to look at that - is the fluid level OK (must check directly at the transmission)?
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Old Feb 26, 2008 | 02:59 PM
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I know exactly what you are talking about. I felt the same way with my 06 factory shifter. I think it has much to do with the sloppy long throws of the factory unit. I purchased the new MGW short shifter a few weeks ago and keeping the revs up between shifts is not a problem anymore. I feel much more like a pro shifting also because the shifts are so much quicker. If your looking to upgrade check it out, the price is right and you will be happy with the results. No more missing shifts.......
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Old Feb 26, 2008 | 03:01 PM
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Originally Posted by my2005c6
Well, if I shift at a high rpm, say around 5k, push the clutch in and shift quick enough not to let the rpm's drop, its very hard to shift and sometimes she actually "grinds". But again, thats only going from 1st to 2nd and sometimes into 3rd. Only at high rpm's.
Maybe your coordination is not right yet. If you are shifting fast at high RPMs maybe you are not depressing the clutch in time with the shifting of the gears, or maybe you're releasing it too fast.
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Old Feb 26, 2008 | 03:06 PM
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Originally Posted by mksz51
It shouldn't do that with an upshift. My experience is that the harder you drive it the more it likes it. Sometimes third is a bit tricky to find but 1 - 2 shift should be just as fast and smooth as you like. You are sure you are timing the clutch release well with the shifting motion?

Might want someone to look at that - is the fluid level OK (must check directly at the transmission)?
Just thought it was a C6 characteristic of an M6 until now. The peddle and timing are good. Might just have to bring her in for a check up.
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Old Feb 26, 2008 | 03:10 PM
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Originally Posted by Wayne88
Maybe your coordination is not right yet. If you are shifting fast at high RPMs maybe you are not depressing the clutch in time with the shifting of the gears, or maybe you're releasing it too fast.
I really never thought too much about it until a little while ago. The next time I drive it (this weekend) I'm going to see what the deal is. Thanks
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Old Feb 26, 2008 | 03:16 PM
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Originally Posted by my2005c6
On mine there is no way you could shift so fast. Example: Taking off in 1st and bringing here up to around 5 grand then shift right into 2nd I'll have to let the rpm's drop before she will allow me to shift.

Is this normal. Now shifting 3rd to 4th and so on will shift "quick".
Not normal. Bring it in.
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Old Feb 26, 2008 | 03:22 PM
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Originally Posted by edv2122
I know exactly what you are talking about. I felt the same way with my 06 factory shifter. I think it has much to do with the sloppy long throws of the factory unit. I purchased the new MGW short shifter a few weeks ago and keeping the revs up between shifts is not a problem anymore. I feel much more like a pro shifting also because the shifts are so much quicker. If your looking to upgrade check it out, the price is right and you will be happy with the results. No more missing shifts.......
Funny, I was looking at that a few weeks ago. Maybe I should have bought it then. Thanks
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Old Feb 26, 2008 | 03:52 PM
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How many miles on your car?
Have you performed the recommended 30K mile transmission fluid change?
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Old Feb 26, 2008 | 04:16 PM
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Originally Posted by PowerLabs
How many miles on your car?
Have you performed the recommended 30K mile transmission fluid change?
Wow, thats a damn good point there. She right at 31 k. Didn't even dawn on me.

Well, now this weekend I have another project. With the M6, is it a pain in the rear to change out the fluid yourself or would you recommend bringing it to the dealer? I really would like to avoid bringing to the dealer. Thanks

Last edited by my2005c6; Feb 26, 2008 at 04:31 PM.
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Old Feb 26, 2008 | 04:31 PM
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I'll bet that the shifting you saw in the videos wasn't done with the stock shifter. I bet they used an aftermarket shifter.

Tom

Last edited by TCW; Feb 26, 2008 at 05:20 PM.
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Old Feb 26, 2008 | 05:02 PM
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Originally Posted by my2005c6
Wow, thats a damn good point there. She right at 31 k. Didn't even dawn on me.

Well, now this weekend I have another project. With the M6, is it a pain in the rear to change out the fluid yourself or would you recommend bringing it to the dealer? I really would like to avoid bringing to the dealer. Thanks
It can easily be done at home if you have some degree of mechanical aptitude. Search is your friend - there are illustrated posts available on how to do it. Personally, I'd do the differential also while you're back there.
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Old Feb 26, 2008 | 05:16 PM
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Originally Posted by mksz51
It can easily be done at home if you have some degree of mechanical aptitude. Search is your friend - there are illustrated posts available on how to do it. Personally, I'd do the differential also while you're back there.
Hey thanks guys, you people are great.
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Old Feb 26, 2008 | 05:25 PM
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At the dragstrip I shift at redline. If you can't then you have problems with shift mech or tranny
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Old Feb 26, 2008 | 05:28 PM
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Originally Posted by my2005c6
Wow, thats a damn good point there. She right at 31 k. Didn't even dawn on me.

Well, now this weekend I have another project. With the M6, is it a pain in the rear to change out the fluid yourself or would you recommend bringing it to the dealer? I really would like to avoid bringing to the dealer. Thanks
I haven't done one yet, but as someone else pointed out there are write ups on how to.
Consider changing the factory fluid for something more suited for spirited driving. Forum members have had good experience with Redline, Royal Purple and Amsoil. I've personally used Redline and RP and prefer Royal Purple, but go with what you are comfortable with.
And definitely do the rear diff while you are at it. Service intervals for that are 15K. I did mine with Amsoil and couldn't be happier.
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Old Feb 26, 2008 | 05:31 PM
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Originally Posted by TCW
I'll bet that the shifting you saw in the videos wasn't done with the stock shifter. I bet they used an aftermarket shifter.

Tom
I disagree. I had both a factory shifter and a Hurst shifter on my C5 Z06 and either one could be shifted very fast. Remember that the C6 shifter is identical to the one on the C6 Z06 and that is not a car meant to be driven gently.
I prefer my C6 shifter to the Hurst I had and can shift it as fast as I care to abuse my synchros with. In fact I can probably shift it so fast that I will force the gears to grind because the synchronizers were never designed to match rpms at that rate; the shifter is not the limiting factor; the transmission is. And the limit is very high.
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Old Feb 26, 2008 | 05:54 PM
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Guys, I'm going to change out the trans fluid with RP and also do the rear end. I'll see what the deal is after that.
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Old Feb 26, 2008 | 09:45 PM
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Originally Posted by my2005c6
Guys, I'm going to change out the trans fluid with RP and also do the rear end. I'll see what the deal is after that.
Fresh transmission fluid is better than old fluid but I doubt it will help increase the speed of your shifts. Fresh oil will make it seem a bit smoother though. The MN6 can be shifted quite fast...you can power-shift it if you want (of course you run the risk of blowing your differential). I suggest you just practice.

Changing your transmission fluid isn't difficult. Just make sure you can open the fill plug before you drain the fluid. Here's a couple DIY threads for changing both your tranny fluid and your differential fluid.

http://forums.corvetteforum.com/show...ion+oil+change

http://forums.corvetteforum.com/show....php?t=1497063

Good luck.
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