C8 Stingray DCT Pictures & Video, Yet Many More Details Still Forthcoming

[John]

The Stingray’s DCT is an eight speed, is a clean sheet design that GM spec’d, and made by Tremec to meet Corvette’s rigourous duty testing cycle.




[Quote=Ed Piatek, Corvette Chief Engineer]It is two manual gearboxes that have clutches actuated by computers on a concentric shaft.

“During very aggressive launches you can actually drive torque through both shafts.”

I do not understand how that could work, but at 1:40+ in this GM video, that is what he said. Perhaps that allows smaller gear sizes (lesser weight), for the video explicitly notes that the DCT was designed for, and accomplishes a really low Center of Gravity...

In those hard launches you are actually still engaged in 2nd gear while you are engaging third — for almost zero time gap when no torque is interrupted. This could well be a major contributor to the amazing, sub 3.0 second 0-60 time. Thanks GM for this video

I took the very first two at the reveal; below the informative screen prints all from the above GM video

[N4SPEED]

Thank you for sharing John!!

I loved my C7 Z06, but the gearbox, or should I say the slush box was the weak point of that car. So glad that C8 will have a DCT!

[John]

For those who are wanting five DCT videos of varying technical involvement, here’s IMO one of our learning threads.

https://www.midenginecorvetteforum.c...ng-about-a-dct

[ZORA 69]

This DCT is very impressive , especially with the comments made by Tadge stating that there was as much effort put into this transmission as the rest of the car.

[John]

That integration of the DCT into the electronics of the car is critical, e.g., not the jerky shifting at low speed and low RPM’s that Tadge complained about others’ DCT’s years ago.

As you noted ZORA 69!

[68roadster]

Sounds fantastic! He made some statement at the reveal (of course Tadge will only be super positive) about how it would be something like a new standard in the industry?

[electroVette]

Sounds fantastic! He made some statement at the reveal (of course Tadge will only be super positive) about how it would be something like a new standard in the industry?

That's a bold statement given the excellence of the ZF/Porsche PDK. If any team can do it I'd think the Corvette team are the ones. GM performance in general has some of the best chassis and powertrain tuning in the industry. Just a minor example, but the 10 speed TC automatic co-developed by Ford and GM is used in both the Mustang GT and the Camaro SS. In comparisons, there is no comparison: the Ford tuning has the tranny hunting for the right gear all the time and being a general PITA while the GM tuning is superb and always seems to be in the right gear in any situation.

[68roadster]

Tadge J.: DCT in this car = "A masterpiece of engineering art and design that will become a benchmark for the industry."