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Hey,

I used the search function and found the ordering thread, but maybe I missed the deets about the new 8 speed auto that's supposed to be offered in the 2015 z06 and stingray base. Literally I'm waiting for the 8 speed auto as I am not fond of 6 speed auto. I see people placing orders for 2015's already if I'm correct, how does this even work if chevy is keeping the low down on the 8 speed for the non zo6 vette. Is that even an option?

Thanks,
 

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No one has placed an order for a 2015. People have made agreements with dealers to be able to place an order when GM opens up the order banks but no proper orders can or have been placed anywhere by anyone.

You could sign a pending order document with a dealer based on the 8 speed being available so if that turns out not the be true you should get whatever deposit you have to cough up back.

For example, you could say you want a 2015 2LT Z51 with NPP exhaust, Mag ride, Nav and the 8 Speed auto trans and if none of those options are available in 2015 you should be able to back out of the order.
 

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Exactly what I have done, i.e., gave a deposit to a dealer with lots of allocation. In turn, he said that I am number X on his ordering list when GM's allows dealers with Z06 allocation to place orders.

While, typically GM opens up the order window around May 1st for the next year's model, due to the delayed production on the StingRay convertible, the order window for the 'verts were opened up approximately September 1st. As the convertible were to be available late fourth quarter last year, similar to about when the Z06 might be customer available this year (though we have also seen a different schedule of early 2015 Z06 customer delivery), guessing that dealers with Z06 specific allocation will be able to place orders around September.

Typically GM's announces the next model year's specs at the late April NCM Bash.

However, and I could have missed this among the flurry of press releases, articles, interviews and videos, I have not seen or heard GM specifically state that the 8-speed auto will be available in the StingRay for 2015. Seen supposition to that, but looking for GM confirmation. Anyone have that confirmation please?
 

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I haven't seen any confirmation, just the SAE paper that's been redacted saying it was slated for the 2015 C7.


Sent from my iPad using Corvette Stingray Forum
 

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Thanks Mark, for pointing us in the right direction. Found the entire paper, and you are correct that is says "2015 Corvette." Before the SAE pulled it, someone at managed to preserve the text. Here's part of it, and if anyone wants to see all of it....

"General Motors Rear Wheel Drive Eight Speed Automatic Transmission" Technical Paper
2014-04-01
James Michael Hart, Tejinder Singh, William Goodrich

General Motors Rear Wheel Drive Eight Speed Automatic Tran: General Motors shall introduce a new rear wheel drive eight speed automatic transmission, known as the 8L90, in the 2015 Chevrolet Corvette. The rated turbine torque capacity is 1000 Nm. This transmission replaces the venerable 6L80 six speed automatic transmission."

I hope it will be available for all 2015 Corvettes.. It weighs eight pounds less than the 2014 six-speed auto trans, gets 5% better fuel economy, and as all development costs have already been incurred, it would make sense for all those reasons to spread the development costs among as many vehicles as possible. The only thing that might negatively factor in is if it costs more to manufacture, but even if so, GM could raise the automatic trans option price by a couple of hundred dollars (or whatever) and recoup development costs all the more quickly by offering in in all 2015 StingRays and all 2015 Z06's.

Hope so!
 

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Someone posted an article in one of the threads on this site a few days ago. The article was in a local paper in Toledo, Ohio. It was discussing a new eight speed transmission that GM was giving that manufacturing facility. The interesting thing was that it said the factory would ramp up production around the first quarter of calendar year 2014. If Corvette were not going to use these transmissions until the Z06, then they would not need to ramp production until a few months before December. Until I read that article, I was guessing that it would go in the 2015 Z06 first, then the 2016 StingRay. After reading the article, it convinced me the 2015 StingRay will get the eight speed automatic starting this summer. I may be wrong, or the newspaper article could be wrong, or things could have changed since it was published, or... However, if it that article is correct, the transmission will go in the 2015 StingRay starting this summer.
 

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I found it: "The new 8-speed line will not be in full production until the first quarter of 2014. Right now, almost 6,000 6-speed transmissions are built in Toledo every day."

That is the last paragraph of this article: http://www.13abc.com/story/18769971/toledo-gm-plant-readies-for-new-8-speed-transmission

Again, there is no reason to go to full production in the first quarter of 2014 if it were not to be used extensively until the Z06. No one would want to pay storage costs for that long.

I really think the 2015 StingRay will get it this summer. Of course, I could be wrong. John Elegant, I hope you can get more information from your many sources...
 

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I found it: "The new 8-speed line will not be in full production until the first quarter of 2014. Right now, almost 6,000 6-speed transmissions are built in Toledo every day."

That is the last paragraph of this article: http://www.13abc.com/story/18769971/toledo-gm-plant-readies-for-new-8-speed-transmission

Again, there is no reason to go to full production in the first quarter of 2014 if it were not to be used extensively until the Z06. No one would want to pay storage costs for that long.

I really think the 2015 StingRay will get it this summer. Of course, I could be wrong. John Elegant, I hope you can get more information from your many sources...
This transmission is not exclusive to the Corvette. They need to get it into the light trucks ASAP to counter the A8 in the Ram. They will build and install 100's of thousands of these transmissions this year, the Corvette is a very small subset of the group.

BTW, Tadge commented on an interview that one of the criteria for the transmission development was low cost and that criteria was met. I don't know why everyone thinks this is going to be so expensive?
 

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8L90 coming in May 2014

This transmission is not exclusive to the Corvette. They need to get it into the light trucks ASAP to counter the A8 in the Ram. They will build and install 100's of thousands of these transmissions this year, the Corvette is a very small subset of the group.

BTW, Tadge commented on an interview that one of the criteria for the transmission development was low cost and that criteria was met. I don't know why everyone thinks this is going to be so expensive?

That's correct. 8L90 will be offered in trucks as well. It will start production in May 2014. That is 1 month later than planned due to some wrinkles (ie. supplier delays from long lead time components from China). They'll offer a lower torque version called the 8L45 starting in April 2015, but that won't be used in Vettes at all.

They'll only make about 2000 per month at the start and then ramp up from there (probably quite quickly).
 

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Here the Auto Guide article saying, no eight-speed auto trans for 2015 StingRay. In the article, they extensively quote Chief Corvette Engineer Tadge Juechter, including relaying his explanations.

AutoGuide said:
“As far as the Stingray coupe and convertible, we haven’t announced any changes. Everybody is speculating that we’re going to put the eight-speed in that. The question would be: ‘do you do it in 15 or 16,” Corvette chief engineer Tadge Juechter said.

Chances of the new eight-speed reaching Chevrolet’s lesser sports car in the 2015 model year aren’t good.

“We’ve got a lot on our plate to get done,” he said.

Specifically, his team has the Corvette Z06 to build. The car shown earlier this month in Motor City still has a year of development to go through before it’s ready for sale.

There are probably more than a few people willing to violate Geneva Protocol to know exactly what it is that Juechter’s team is up to behind closed doors. Hiss if you will at the idea of a torque converter automatic, but if he has misgivings about packaging the transmission, they’re impossible to spot.

“Our development guys say it’s like driving a sports bike. Zing, zing, zing,” he said while grinning and flicking a set of make-believe paddle shifters during an interview at the Detroit Auto Show earlier this month.

The Corvette is already a low-volume product for Chevrolet and the Z06 will make up an even smaller sliver of the car’s overall sales. It was expensive to develop the new eight-speed and General Motors is eager to expedite the amortization of that cost by using it in more vehicles. Ideally, that would mean an eight-speed Stingray would already be waiting in the wings, held back by little more than model year formality. It’s much more complicated than that.

“You would think, ‘OK you’ve validated the high horsepower one, so validating the low horsepower one is like falling off a log, you just judge it.’ But that’s not true.”

There’s one little word to blame: validation. Swapping the Corvette’s transmission will be a complicated and vastly expensive process that the company won’t treat lightly.

“You’ve got to recalibrate everything. People think, ‘oh well its powertrain calibration’, but its more than that.

“It’s all the stability systems because you’re managing torque. So traction control, launch control, performance traction management, all that stuff has to be re-done when you just change the transmission.”

The level of computer involvement in modern sports cars makes incredible performance milestones possible, but it also means long hours for people like Juechter.

“Things that used to be mechanically simple are now electronically complex,” he said. The car will also need to pass GM’s battery of extreme temperature tests, all of which soaks up time and resources.

Meanwhile, key decisions about the Z06 including damper tuning, when to de-activate four of the blown 6.2-liter LT4’s eight cylinders and much more are still up in the air. There will be many more record-setting laps at the Milford proving grounds before Chevrolet shores up the production Z06.

Eight-Speed Auto Unlikely for 2015 Corvette Stingray » AutoGuide.com News
 

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It may or may not end up in the '15 Stingray, but theybare definitely planning on using it for Corvette at some point. I'm not referencing some magazine. I am referencing senior engineers' words, directly from their mouths to my ears. I supply compoments for the new 8L90 and 8L45 transmissions.
 

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It may or may not end up in the '15 Stingray, but theybare definitely planning on using it for Corvette at some point. I'm not referencing some magazine. I am referencing senior engineers' words, directly from their mouths to my ears. I supply compoments for the new 8L90 and 8L45 transmissions.
I don't think anyone disagrees it will end up in all Corvette's eventually. The problem seems to be having enough manpower on the Corvette team to do the tuning required to use it in the Stingray and have the work done before 2015 production begins. It will either be offered midyear or not make the cut till 2016 according to what Tadge has said.
 
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