Go Back   Corvette Forum > C7 Corvette > C7 General Discussion
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C7 General Discussion
General C7 Corvette Discussion not covered in Tech Sponsored by
Kerbeck Corvettes

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 04-04-2013, 02:27 PM   #1
shep29
Junior Member
 
shep29's Avatar
 
Member Since: Apr 2008
Default New 8 speed?

Noticed today on leftlanenews that GM is investing heavily in building two new transmissions, one being an 8 speed to be rolled out by 2016. Wonder if an offshoot of this willbe a high performance DCT (ie an answer to Porsches PDK)?
shep29 is offline   Reply With Quote
Old 04-04-2013, 02:37 PM   #2
dmporter31
CF Senior Member
 
dmporter31's Avatar
 
Member Since: Oct 2004
Location: Ellicott City MD
Default

Quote:
Originally Posted by shep29 View Post
Noticed today on leftlanenews that GM is investing heavily in building two new transmissions, one being an 8 speed to be rolled out by 2016. Wonder if an offshoot of this willbe a high performance DCT (ie an answer to Porsches PDK)?
Probably not. GM is rumored to be working on an 8 speed auto (conventional torque converter unit). ATS, ATS-V and CTS-VSport (?!?) slated to receive for 2014 models if I'm up to date on the grapevine correctly. Will the C7 get it? Up to Tadge, Harlen and the rest of the boyz @ BG. Is the C7 getting an honest to God dual clutch transmission sans torque convertor? Not anytime soon seems to be the consensus.

You could of course ask 427 C5 how he feels about it........

dmporter31 is offline   Reply With Quote
Old 04-04-2013, 02:42 PM   #3
DREAMERAK
CF Senior Member
St. Jude Donor '12-'13-'14
Support Corvetteforum!
 
DREAMERAK's Avatar
 
Member Since: Jun 2005
Default

Quote:
Originally Posted by dmporter31 View Post
Probably not. GM is rumored to be working on an 8 speed auto (conventional torque converter unit). ATS, ATS-V and CTS-VSport (?!?) slated to receive for 2014 models if I'm up to date on the grapevine correctly. Will the C7 get it? Up to Tadge, Harlen and the rest of the boyz @ BG. Is the C7 getting an honest to God dual clutch transmission sans torque convertor? Not anytime soon seems to be the consensus.

You could of course ask 427 C5 how he feels about it........

I doubt a Stingray will get a dct, but a C7 Z06/ZR1 replacement without afm could.
DREAMERAK is offline   Reply With Quote
Old 04-04-2013, 02:50 PM   #4
OnPoint
CF Senior Member
Support Corvetteforum!
 
OnPoint's Avatar
 
Member Since: May 2006
Location: Wichita Kansas - 2011 Callaway GS 606HP & 2010 ZR1 638HP
Default

Quote:
Originally Posted by dmporter31 View Post
You could of course ask 427 C5 how he feels about it........



Yeah, I wonder if he might take the opportunity to state his opinion. Wonder if he ever has. . . . . . . .
OnPoint is offline   Reply With Quote
Old 04-04-2013, 03:00 PM   #5
daixloxbmw
CF Senior Member
 
Member Since: Oct 2012
Default

Quote:
Originally Posted by OnPoint View Post


Yeah, I wonder if he might take the opportunity to state his opinion. Wonder if he ever has. . . . . . . .
Lol, here we go again...

"GM and the C7 is a failure"

"Stop making excuses"

"DCT and AWD is a must if the C7 has any chance of competing"
daixloxbmw is online now   Reply With Quote
Old 04-04-2013, 03:01 PM   #6
sam90lx
CF Senior Member
 
sam90lx's Avatar
 
Member Since: May 2010
Location: Ventura CA
Default

Quote:
Originally Posted by shep29 View Post
Noticed today on leftlanenews that GM is investing heavily in building two new transmissions, one being an 8 speed to be rolled out by 2016. Wonder if an offshoot of this willbe a high performance DCT (ie an answer to Porsches PDK)?
What happened to 2015? Fail!
sam90lx is offline   Reply With Quote
Old 04-04-2013, 03:19 PM   #7
BeaZt
CF Senior Member
St. Jude Donor '14
 
BeaZt's Avatar
 
Member Since: Jan 2008
1320vetteran
Default

Quote:
Originally Posted by dmporter31 View Post
You could of course ask 427 C5 how he feels about it........

BeaZt is offline   Reply With Quote
Old 04-04-2013, 03:52 PM   #8
NSC5
CF Senior Member
Support Corvetteforum!
 
Member Since: Aug 2012
Default

Looks like the third generation CTS is coming out with an Aisin 8 speed at least for the first year until the GM product is available. I have been on the fence as to what will replace my 08 CTS but the 2014 with a TT 3.6 is looking pretty appealing. The downside is owning what will probably be an "orphan" transmission within the GM supply network. Time to research Aisin reliability.

I still plan on waiting until late 2015 to place a C7 order to see what new goodies are introduced.
NSC5 is offline   Reply With Quote
Old 04-04-2013, 04:02 PM   #9
dmporter31
CF Senior Member
 
dmporter31's Avatar
 
Member Since: Oct 2004
Location: Ellicott City MD
Default

Quote:
Originally Posted by NSC5 View Post
Looks like the third generation CTS is coming out with an Aisin 8 speed at least for the first year until the GM product is available. I have been on the fence as to what will replace my 08 CTS but the 2014 with a TT 3.6 is looking pretty appealing. The downside is owning what will probably be an "orphan" transmission within the GM supply network. Time to research Aisin reliability.

I still plan on waiting until late 2015 to place a C7 order to see what new goodies are introduced.
See also "Lexus"
dmporter31 is offline   Reply With Quote
Old 04-06-2013, 03:10 AM   #10
david999
Junior Member
 
Member Since: Apr 2013
Default

What is 8 speed would you like to tell me????????
david999 is offline   Reply With Quote
Old 04-06-2013, 05:21 AM   #11
SCM_Crash
UIX Engineer to the Max!
Support Corvetteforum!
 
SCM_Crash's Avatar
 
Member Since: Jul 2009
Location: Los Angeles California
Default

Has anyone here actually stated the reasons why a DCT would be beneficial to the C7 over a high performance torque converter based auto (aside from marketing reasons)?

I haven't read any real reasons, other than "to keep up with..." from anyone. They both can shift just as fast and they both can be just as efficient. They could both be just as heavy. The DCT is more expensive and requires a lot more computer control. DCTs are also physically larger.

I'm still not clear as to why we need a DCT. Someone care to elaborate?
SCM_Crash is offline   Reply With Quote
Old 04-06-2013, 06:44 AM   #12
Raitzi
CF Senior Member
 
Member Since: Dec 2012
Location: Espoo, Finland
Default

Quote:
Originally Posted by SCM_Crash View Post
Has anyone here actually stated the reasons why a DCT would be beneficial to the C7 over a high performance torque converter based auto
There would be a small fuel consumption difference but I think mostly people think DCT is the only good option as there has not been a high performance torque converter based auto previously with corvette. Aisin 8-speed would have been sweet.
Raitzi is offline   Reply With Quote
Old 04-06-2013, 06:56 AM   #13
BlueOx
CF Senior Member
 
BlueOx's Avatar
 
Member Since: Feb 2012
Default

Just a bit of related old news...not sure how it affects Corvette yet.
http://wot.motortrend.com/gm-ford-si...#axzz2PgBfOjuI
BlueOx is offline   Reply With Quote
Old 04-06-2013, 07:00 AM   #14
Raitzi
CF Senior Member
 
Member Since: Dec 2012
Location: Espoo, Finland
Default

Quote:
Originally Posted by BlueOx View Post
Just a bit of related old news...not sure how it affects Corvette yet.
http://wot.motortrend.com/gm-ford-si...#axzz2PgBfOjuI
Relevant bit: " Ford will head up development on 10-speed automatic transmissions designed for use in rear-drive applications such as performance and luxury cars"
Raitzi is offline   Reply With Quote
Old 04-06-2013, 07:08 AM   #15
BlueOx
CF Senior Member
 
BlueOx's Avatar
 
Member Since: Feb 2012
Default

Quote:
Originally Posted by Raitzi View Post
Relevant bit: " Ford will head up development on 10-speed automatic transmissions designed for use in rear-drive applications such as performance and luxury cars"
Well, considering how specific the form factor of a Corvette transmission is, one has to wonder how that would work.
BlueOx is offline   Reply With Quote
Old 04-06-2013, 02:17 PM   #16
SCM_Crash
UIX Engineer to the Max!
Support Corvetteforum!
 
SCM_Crash's Avatar
 
Member Since: Jul 2009
Location: Los Angeles California
Default

Quote:
Originally Posted by Raitzi View Post
There would be a small fuel consumption difference but I think mostly people think DCT is the only good option as there has not been a high performance torque converter based auto previously with corvette. Aisin 8-speed would have been sweet.
Sure. Maybe not in a Corvette, but that's like saying "Turbos have never been in a Corvette, so we want Nitrous!"

AFM, VVT, Auto-Rev-match, eLSD, etc have never been in a Corvette. Yet this time they will be. I imagine that a high performance torque converter auto is on its way. I'm pretty sure they're not going to drop the ball on the auto since - in the non-Z06/ZR1 form - the auto sold far more than manuals.

Also, with the torque converter and lock-up technology now, the only fuel savings there might be is on the streets. There'd literally be no difference on the freeway. Some will argue that the torque converter adds rotating mass to the drive train. I have bad news for them if they do... DCTs have two clutches that spin at the same time. And the entire setup is heavier. LOL

I'm not saying that I don't want a DCT. In fact, it wouldn't matter to me since I drive manuals. But I do think it's silly to kick and scream about adding a DCT just because it's new technology and just because some other premium car has it. Torque converter autos also have a better off-the-line performance and better low-speed feel. I guess nobody seems to recognize that.
SCM_Crash is offline   Reply With Quote
Old 04-06-2013, 03:25 PM   #17
Jinx
CF Senior Member
 
Jinx's Avatar
 
Member Since: Feb 2000
Location: Oakland, CA
Default

DCT = DOHC = coilovers
Jinx is offline   Reply With Quote
Old 04-06-2013, 04:15 PM   #18
JerriVette
CF Senior Member
 
JerriVette's Avatar
 
Member Since: Nov 2003
Location: Bergen county NJ
Default

I was hopeful for a Mercedes style MCT for the corvette as it would have been relatively easy for GM to continue to use it's plantary gearbox production facilities offering a cool lower cost production alternative to a DCT transmission."

I'm sure the upcoming high performance 8 speed automatic will be a cool ride with interesting performance...

Till I get to test drive one though I'd be in for the rev matching M7

Last edited by JerriVette; 04-06-2013 at 04:23 PM.
JerriVette is offline   Reply With Quote
Old 04-06-2013, 04:22 PM   #19
Sin City
CF Senior Member
 
Sin City's Avatar
 
Member Since: Apr 2013
Default

Quote:
Originally Posted by SCM_Crash View Post
Has anyone here actually stated the reasons why a DCT would be beneficial to the C7 over a high performance torque converter based auto (aside from marketing reasons)?

I haven't read any real reasons, other than "to keep up with..." from anyone. They both can shift just as fast and they both can be just as efficient. They could both be just as heavy. The DCT is more expensive and requires a lot more computer control. DCTs are also physically larger.

I'm still not clear as to why we need a DCT. Someone care to elaborate?
Just much better feel and control. I've owned both the Ferrari 458 coupe and spider and the DCT is truly a marvel. Instantaneous shifting up and down, no power loss, and complete flexibility to shift at any time up or down, including into 1st at high RPMs.

If the car came with DCT, I would order it over a manual. As it is, I am ordering the manual but would buy a new one with DCT.

I think the big disadvantage... and why the base will not come with one... is cost, size, and complexity.
Sin City is offline   Reply With Quote
Old 04-06-2013, 05:37 PM   #20
LS1LT1
CF Senior Member
 
LS1LT1's Avatar
 
Member Since: Feb 2001
Location: Springfield, NJ Raceway Park & Atco Raceway
Send a message via AIM to LS1LT1
Default

Quote:
Originally Posted by shep29 View Post
Noticed today on leftlanenews that GM is investing heavily in building two new transmissions, one being an 8 speed to be rolled out by 2016. Wonder if an offshoot of this willbe a high performance DCT (ie an answer to Porsches PDK)?
Not sure if you knew this or not but the rumors of an 8 speed automatic (not a DCT/PDK/F1/SMG style though) making it's debut in the 2014 Corvette were running wild for MONTHS until the info about them actually using a 6 speed auto arrived.
I think there's still a possibility that we will see an 8 speed in future C7 models though.
LS1LT1 is offline   Reply With Quote
Old 04-06-2013, 05:37 PM
 
Go Back   Corvette Forum > C7 Corvette > C7 General Discussion
Reload this Page New 8 speed?
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
8 speed Automatic Jodyhighroller3 C7 General Discussion 34 07-19-2014 09:56 AM
Any News on 8 spd Auto? L84Jim C7 Tech/Performance 11 06-30-2014 10:13 PM
8 speed auto tranny vetter61 C7 General Discussion 20 04-07-2014 10:22 AM
6 speed, 7 speed , 8 speed--how about a 4 speed? sdcnews C7 General Discussion 46 03-08-2014 10:11 PM
Standard shift with eight speeds. Bill17601 C7 General Discussion 20 12-20-2013 05:39 PM


All times are GMT -4. The time now is 12:02 PM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2