All but confirmed....DCT it is!
#1
Melting Slicks
Thread Starter
All but confirmed....DCT it is!
I spoke to a Tremic Rep at their Headquarters requesting additional information on the TR9007/TR7007 because I would like to perform a retrofit with it and wanted to know availability/pricing/etc and was told that this will be an OEM Trans ONLY and that one of the major US Manufacturers will be announcing shortly that their vehicle will be using this Transmission! Of course it could be any of the Big 3 but I know where I have my money lol!
When I pressed him as to would they be offering an "Aftermarket" version of this trans similar to the way they offer the T56, etc. the answer was big fat NO! When I pressed for details here's what I got...…the data bus required to operate this trans carries to much data for existing BCM's to handle so they won't be offering it. Of course this sounds as lame as someone saying that since there is no harness available for a current production engine so we can't sell one....duh....that's what the aftermarket is for. Guess we'll just have to wait and see!
When I pressed him as to would they be offering an "Aftermarket" version of this trans similar to the way they offer the T56, etc. the answer was big fat NO! When I pressed for details here's what I got...…the data bus required to operate this trans carries to much data for existing BCM's to handle so they won't be offering it. Of course this sounds as lame as someone saying that since there is no harness available for a current production engine so we can't sell one....duh....that's what the aftermarket is for. Guess we'll just have to wait and see!
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#3
Nice to be reminded
#4
#6
Melting Slicks
Yep 99.9% it’s a DCT, packaging would not fit automatic trans in the new ME setup.
Everything We Know About the Mid-Engine C8 Corvette’s Dual-Clutch Transmission
https://www.caranddriver.com/news/ev...h-transmission
Everything We Know About the Mid-Engine C8 Corvette’s Dual-Clutch Transmission
https://www.caranddriver.com/news/ev...h-transmission
Last edited by fasttoys; 09-16-2018 at 10:31 PM.
#7
So I assume that when a C8 ZR1 is released and it exceeds that 664 lb-ft limit, then Chevy will have to substitute a different DCT. Well, that gives Tremec a few years to engineer a TR1207 or whatever.
#8
Melting Slicks
Thread Starter
- Maximum engine power: 650 hp (485 kW)
- Maximum engine torque: 635 lb-ft (860 Nm)
- Maximum gearbox torque: 738 lb-ft (1000 Nm)
#9
Race Director
Comouters ability to control torque in lower gears allows for greater use of transmissions...plus with enough interest the suppkier can increase transmission capability..
still think the manual transmission should be standard for the dieharts..
i want a dct this time around even after forty years of driving manuals..
new car, new engine location...why not try a new fangled transmisssion for a few laughs..
base msrp will be listed at launch with a manual transmission that will come with a delayed arrival would be my best guess..
get your new c8 with a dct if you want it fast and early on.
manual version will be available at the end of the first year production run..
i know nothing official and its just me shooting the sh t.
still think the manual transmission should be standard for the dieharts..
i want a dct this time around even after forty years of driving manuals..
new car, new engine location...why not try a new fangled transmisssion for a few laughs..
base msrp will be listed at launch with a manual transmission that will come with a delayed arrival would be my best guess..
get your new c8 with a dct if you want it fast and early on.
manual version will be available at the end of the first year production run..
i know nothing official and its just me shooting the sh t.
#10
Didn’t Tadge at one point mention that there were no DCT at the time that could handle the torque of the LT4? Where do DCT’s stand now in relation to the torque output of the LT5? Which other production car uses a DCT with torque in excess of 650?
#11
Melting Slicks
In an evenly matched race, with Racecar A touting more torque at lower RPMs and Racecar B possessing more high RPM horsepower, who would win? Racecar A will be quicker to accelerate off the line and might look as if it has the lead at the beginning. But once Racecar A shifts into second gear, it will lose its acceleratory bump. By the time Racecar A shifts into third gear, high-horsepower Racecar B will be the new leader.
A hefty diesel dump truck creates huge amounts of low-end torque. You can set it side by side with an exotic sports racer designed to channel high-range RPMs and likely know which model will move faster. But so many other factors come into comparing the horsepower and torque between the two vehicles, the overall vehicle weight and the gearing setup being two major influential elements.
While choosing horsepower over torque and vice versa may feel like a case of the chicken and the egg, one thing we can be sure of is that they’re both vital to performance racing.
At the end of the 2006 competition season, both NASCAR Cup and FIA Formula One engines had reached pinnacles of crankshaft speed for their respective classes of motorsport: 10,000 and 20,000 RPM respectively. Although operating at these RPM levels has since been outmoded by regulation (NASCAR’s ever more stringent use of its ‘gear rule’ and the FIA’s 19,000 RPM rev limit introduced in 2007, reduced to 18,000 RPM for 2009).
Dual-clutch Transmissions
https://auto.howstuffworks.com/dual-...ansmission.htm
Last edited by fasttoys; 09-16-2018 at 02:05 PM.
#12
Team Owner
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#13
Team Owner
The DCT is not any different than a normal manual transmission. You want if t stronger, then you design it with wider gears and larger diameter shafts, and reduced gear ratio multiplication to not exceed the strength of the output shaft.etc.
When GM was designing the C6 ZR1 with 604 lb-ft of touque, it exceeded the strength of the T56 transmission used in the C6 Corvette(base, Z51 and Z06), so Tremec designed new transmission(TR6060) to increase the width of gears. They also incorporated higher gear ratios so that the output shaft would not twist in first gear. Of course, with the increased strength of the new transmission, the size increased as did the weight of the transmission.
Then, GM uses engine torque management to save the transmission.
#15
Race Director
when gm engineers put their minds to a desired task anything is possible.
they are that good and they work with their suppliers who can deliver.
at the time GM edict was A8 and m7 for the z06 and then zr1...
now gm corvette engineers are going the dct path..litll be easy to kake the dct work.
between the rear mid engine layout and the dct ...this new c8 should be pretty cool...
id imagine a ferrari 458 or 430 driving exoerience for a brand new sports car at a lower orice and gm durabiltiy pretty much nails where the base c8 lands..(possibly the mid line dohc turbo with 600 hp will compare nicely with the mclaren 570 )
the upmodels of the c8 will terorize the ferrari 488 lamborghini huracan for half the costs.
dcts just remove the automitve oress drivers lack of skill these days during testing...the test drivers forgot how to drive manuals to extract the most acceleration...the dct s just do it so easily and cinsistently...the automotive press cant be blammed. The corvette had little choice...as its mission is as a halo vehicle for chevrolet....good press is what its built for...
#16
Race Director
McLaren uses an open diff in all of their cars. They use software to control it. Look how well a 720s hooks up that is without a limited slip differential. Chevy should follow the lead it saves weight.
#17
Le Mans Master
Smaller displacement engines making all their HP at high RPMs are easier on the transmissions (lower TQ).
#18
Team Owner
The Corvette's eLSD added 44 pounds of weight. I'm guessing it won't be on the mid engine car.
#19
There are DCT's out there that can handle the torque of a diesel engine in a truck. The problem is that they are large and heavy, thus not suitable for use in a sports car.
The DCT is not any different than a normal manual transmission. You want if t stronger, then you design it with wider gears and larger diameter shafts, and reduced gear ratio multiplication to not exceed the strength of the output shaft.etc.
When GM was designing the C6 ZR1 with 604 lb-ft of touque, it exceeded the strength of the T56 transmission used in the C6 Corvette(base, Z51 and Z06), so Tremec designed new transmission(TR6060) to increase the width of gears. They also incorporated higher gear ratios so that the output shaft would not twist in first gear. Of course, with the increased strength of the new transmission, the size increased as did the weight of the transmission.
Then, GM uses engine torque management to save the transmission.
The DCT is not any different than a normal manual transmission. You want if t stronger, then you design it with wider gears and larger diameter shafts, and reduced gear ratio multiplication to not exceed the strength of the output shaft.etc.
When GM was designing the C6 ZR1 with 604 lb-ft of touque, it exceeded the strength of the T56 transmission used in the C6 Corvette(base, Z51 and Z06), so Tremec designed new transmission(TR6060) to increase the width of gears. They also incorporated higher gear ratios so that the output shaft would not twist in first gear. Of course, with the increased strength of the new transmission, the size increased as did the weight of the transmission.
Then, GM uses engine torque management to save the transmission.
#20
Le Mans Master
Originally Posted by MitchAlsup
Smaller displacement engines making all their HP at high RPMs are easier on the transmissions (lower TQ).