Although a report last year indicated that the seventh-gen Chevrolet Corvette could be getting an eight-speed automatic transmission, it looks like General Motors might have some other plans in mind. General Motors recently filed a patent with the US Patent and Trademark Office for a new seven-speed dual-clutch transmission, and CorvetteForum.com makes the obvious guess that this performance-enhancing gearbox could find its way a future version of Chevy's performance coupe.

The drawing above comes directly from the patent filing, and while the gearbox will almost certainly be used in more than just one model, it would be a welcomed replacement for the six-speed automatic currently found in the 2014 Corvette. The idea of a DCT in the already-impressive C7 Stingray definitely makes the rivalry between the Corvette and the Porsche 911 a little more intriguing.


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  • 51 Comments
      jhott997
      • 1 Year Ago
      That's a transaxle cross-section; ie, sideways mounted engine and transmission for the layman. This is not the cross-section for a longitudinal mounted powertrain. So, it's not a dct for a Corvette.
        CarNutMike
        • 1 Year Ago
        @jhott997
        Agree with BipDBo. It's not an engineering drawing, it just shows the interelationship of the parts. Someone made an interesting observation in another forum - he felt that filing a patent of an undeveloped product (I skimmed it and am not clear what's novel to be honest) is often an indicator that a manufacturer is NOT intending to act but would like to prevent others. Impossible URL follows: http://pdfaiw.uspto.gov/.aiw?PageNum=0&docid=20130239715&IDKey=F38D863E64C8&HomeUrl=http%3A%2F%2Fetc-rp27.etc%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-adv.html%2526r%3D27%2526p%3D1%2526f%3DG%2526l%3D50%2526d%3DPG01%2526S1%3Dgm.AS.%2526OS%3Dan%2Fgm%2526RS%3DAN%2Fgm
          jhott997
          • 1 Year Ago
          @CarNutMike
          No. It's a real engineering cross-section of a real transmission. It's a cross section of a "sideways" transaxle with a "dry", twin input clutch.
        jhott997
        • 1 Year Ago
        @jhott997
        Plus, that's a dry input clutch in the patent cross-section. Again, not a transmission that will ever be put into a Corvette.
          icemilkcoffee
          • 1 Year Ago
          @jhott997
          How can you tell that it is for a transverse application? How can you tell that it is a dry clutch? And what is the problem with using a dry clutch in the Corvette?
          jhott997
          • 1 Year Ago
          @jhott997
          Icemilkcoffee: Experience. I know it is transverse arrangement because I know this type of cross section: Longitudinal DCT has two concentric lay shafts. The dry clutch is easy to observe. Take a harder look. Dry clutch will not work in high torque applications because: 1: Not enough thermal capacity to absorb heat 2: friction material characteristics of dry clutch won't give shift quality and response needed for high performance applications. Believe me or not, this cross section has nothing to do with a Corvette. Sorry autoblog. Corvette will probably have 8spd planetary automatic. There are reasons why no dct in the corvette. Commercial reasons is the main.
      • 1 Year Ago
      [blocked]
      Rotation
      • 1 Year Ago
      How about for the Code 130R?
      Ryan
      • 1 Year Ago
      I have no idea how automative patents work- does this mean that they have something ready to product at high rates or is this just something earlier on in the development cycle? I have a feeling that if this does make it to the C7 it would be after its mid-cycle refresh or as a swan song and segway into the C8.
        Brex
        • 1 Year Ago
        @Ryan
        They work the same as other patents. You're not obligated to ever produce it or even have a working prototype. It can be to protect future production or to protect the idea for future development. It could even be a licensing proposition.
      Jerry
      • 1 Year Ago
      It is just a power flow patent. It protects the gear train layout from the competition. Does not mean they have anything in the works like this. In the transmission world, patenting a gear train can corner the market. Ever wonder how Ford ended up in a "partnership" with GM of on that global FWD 6-Speed AT? Let's just say GM filed the power flow first and Ford pays GM a few bucks ever time they make one ;)
      nocommie11
      • 1 Year Ago
      Why would a Donkey Cart need a fancy transmission?
        • 1 Year Ago
        @nocommie11
        [blocked]
        Dave
        • 1 Year Ago
        @nocommie11
        Why does a monkey need a computer and an internet connection?
          • 1 Year Ago
          @Dave
          [blocked]
        • 1 Year Ago
        @nocommie11
        [blocked]
        bubba_roe
        • 1 Year Ago
        @nocommie11
        LOL!!! thumbs up.
      icemilkcoffee
      • 1 Year Ago
      Thank you Jesus. GM is only about 10 years too late to the party, but better late than never.
        MONTEGOD7SS
        • 1 Year Ago
        @icemilkcoffee
        I would have to say that DCTs haven't been perfected for 10 years. Arguably they aren't perfected even today, but are getting better with each generation.
          PTC DAWG
          • 1 Year Ago
          @MONTEGOD7SS
          I have driven BMW's and VW's with these things, and if they are not any smoother around town than what I drove, I would not consider owning one, a regular manual gearbox is much better to me. Or a regular auto if you must.
      The Law
      • 1 Year Ago
      BMW has the best DCT.
      Mazdafreak
      • 1 Year Ago
      I'll still take a manual any day of the week. Maybe if I raced in F1 I would think otherwise, but you wouldn't catch me dead in a Corvette without three pedals.
      Macvicar24
      • 1 Year Ago
      Best at what? Please specify all mighty knower of DCTs. Best at looking? Best at breaking? Best at cooking pizza?
      Nick Allain
      • 1 Year Ago
      I'm 100% in favor of this. A DCT in a Corvette makes the majority of Corvettes sold infinitely better. Think not of yourself, but of your coworkers and weird uncles.
      Porsche4life
      • 1 Year Ago
      Porsche has the best DCT on the market right now hands down.
        riserburn99andre
        • 1 Year Ago
        @Porsche4life
        And what does that have to do with this rendering and patent? Are you afraid?
          Porsche4life
          • 1 Year Ago
          @riserburn99andre
          Nope this is called challenge my friend. It makes our engineers compete against each other. Competition! No one will ever be the best there will always be someone better.
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