Unlikely base MEC using “upgraded LT1”
#1081
Banned Scam/Spammer
Not only that but why in the world would they need to "test" it on the C7 first. They have been testing them on the C8 for well over a year at this point.
#1082
Unlikely, since most places these days use "just in time" production and delivery, and payment is made upon delivery. Parts don't really get stockpiled any more.
Putting that transmission in a C7 wouldn't be real-word testing for the C8, since the C7 puts much lower torque loads on the transmission due to having less traction
Putting that transmission in a C7 wouldn't be real-word testing for the C8, since the C7 puts much lower torque loads on the transmission due to having less traction
As far as testing in the c7 goes, its a no brainer... IF they can get the trans to break in the c7 z or zr1, then they can go back to the trans makers and say...
"see, your promises about your products capability are empty, we knew big low end torque would destroy these, we need a better unit or we need to find a new supplier for the c8 flagship models which are going to have more grip and put more strain on the trans and rear diff than this c7 could ever dream of."
If you recall, and maybe i have to fish the threads up as proof, i said long ago that the c8 and c7 would be revealed this year, and would be produced side-by-side, and the new c7 would have the engine and trans from the c8... and then the c7 would have final editions for the reamining 2 years until 2021 or 2022, and then let the public THINK the front engine is dead..
and once the public buys up all the remaining c7's... then have the announcement that Corvette is a brand, is making a small suv, and the c8 front engine car, which will have an all new look.
Corvette will have multiple models, theres no reason not to. GM is going after Porsche hard.
GM would not have gone through the hassle to invent a cabin that was compatible with both front and rear engine configurations... they would have just made a new frame for ME cars only, and just called it a day.... but they openly have admitted that the cabin frame serves both cars.
They will share the cabin frame between the 2 cars, and there will always be 2 cars, with temporary dead zones in between on the FE for marketing drama to get people to buy up the remaining c7's
Last edited by Mikec7z; 03-22-2019 at 07:46 PM.
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tooold2race (03-24-2019)
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Mikec7z (03-22-2019)
#1084
Race Director
I don’t think the DCT will work in the C7 without some major re-engineering. Current design is engine, flywheel, clutch, driveshaft,transmission,and differential.
One option would be to replace the transmission with a DCT out of some other front engine Car, if it would fit in that limited space. Since the DCT has self contained clutches, it would eliminate the clutch up front resulting in a configuration of engine, flywheel, driveshaft, DCT, and differential. (Dint know if it would be an issue but the driveshaft would be turning end time the engine was running.)
Another option would to use the transaxle that has been developed for the C8. You would replace the transmission and differential with the transaxle and also eliminate the front clutch. This configuration would be the engine, flywheel, driveshaft, and transaxle. But this would probably require a complete re-engineering of the rear suspension.
So, no DCT for the C7.
One option would be to replace the transmission with a DCT out of some other front engine Car, if it would fit in that limited space. Since the DCT has self contained clutches, it would eliminate the clutch up front resulting in a configuration of engine, flywheel, driveshaft, DCT, and differential. (Dint know if it would be an issue but the driveshaft would be turning end time the engine was running.)
Another option would to use the transaxle that has been developed for the C8. You would replace the transmission and differential with the transaxle and also eliminate the front clutch. This configuration would be the engine, flywheel, driveshaft, and transaxle. But this would probably require a complete re-engineering of the rear suspension.
So, no DCT for the C7.
Last edited by Tom73; 03-23-2019 at 02:07 AM.
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Mikec7z (03-23-2019)
#1085
Le Mans Master
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I disagree with both lines... theres no way GM and a transmission manufacturer's deals can be that much in GM's favor that GM had not already promised they would keep the trans manufacturer busy as they negotiate a very low price for buying in bulk. GM would be held to a contract as well. Backing out of such a deal could put a Trans factory out of business if they geared up for production of that many transmissions.
For example, many contracts stipulate that if there is a problem with either supply or quality which shuts a production line down, the supplier will pay many thousands of dollars per hour for the time the line is shut down, and this can happen even if it was a result of the auto makers quantity forecasts being at fault. You'll even get scenarios where suppliers hire private charter jets to get parts there on time, in an effort to avoid the huge expense penalties of shutting a line down.
I'm not just making this up, I'm around this sort of stuff on a regular basis.
Last edited by Warp Factor; 03-23-2019 at 08:32 AM.
#1086
Le Mans Master
I don’t think the DCT will work in the C7 without some major re-engineering. Current design is engine, flywheel, clutch, driveshaft,transmission,and differential.
One option would be to replace the transmission with a DCT out of some other front engine Car, if it would fit in that limited space. Since the DCT has self contained clutches, it would eliminate the clutch up front resulting in a configuration of engine, flywheel, driveshaft, DCT, and differential. (Dint know if it would be an issue but the driveshaft would be turning end time the engine was running.)
Another option would to use the transaxle that has been developed for the C8. You would replace the transmission and differential with the transaxle and also eliminate the front clutch. This configuration would be the engine, flywheel, driveshaft, and transaxle. But this would probably require a complete re-engineering of the rear suspension.
So, no DCT for the C7.
One option would be to replace the transmission with a DCT out of some other front engine Car, if it would fit in that limited space. Since the DCT has self contained clutches, it would eliminate the clutch up front resulting in a configuration of engine, flywheel, driveshaft, DCT, and differential. (Dint know if it would be an issue but the driveshaft would be turning end time the engine was running.)
Another option would to use the transaxle that has been developed for the C8. You would replace the transmission and differential with the transaxle and also eliminate the front clutch. This configuration would be the engine, flywheel, driveshaft, and transaxle. But this would probably require a complete re-engineering of the rear suspension.
So, no DCT for the C7.
And I doubt very highly that GM turned the switch on and has an inventory of 20K transaxles sitting around for the C8.
#1087
Getting back to the use of the LT and wanting something in the 500 to 550 hp range, I haven't heard any mention of a MAHLE Jet Ignition type application to the LT series. That would appear to be some F1 technology that is a easy apply to the LT and should result in some appreciable HP gains.
II don't have a feel for the $s, there may well be a less expensive way to achieve the intended levels.
II don't have a feel for the $s, there may well be a less expensive way to achieve the intended levels.
Last edited by Kodiak Bear; 03-23-2019 at 11:47 AM.
#1088
Melting Slicks
I seriously believe GM is going to up-grade the C7 drivetrain because they want to sell FE cars along with ME Corvettes. Without an upgrade, there is no way the FE can keep selling, but with the LT2 and DCT, there is definitely a market.
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tooold2race (03-24-2019)
#1089
Team Owner
Or, how about the C7 that started life with a 6 speed auto and then lost it to an 8 speed auto, without a generational change.
Last edited by JoesC5; 03-23-2019 at 12:55 PM.
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PCMIII (03-23-2019)
#1090
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If the C8 won't be offered in a manual, then I'd think GM would especially want to keep a manual in the C7, rather than switching to a DCT.
#1092
Team Owner
Maybe GM doesn't feel that that is enough take to warrant the expense of having two transmissions available. IF the order guide is for an upgraded FE 2020 Corvette, then it not having a GS, Z06 or ZR1 offered could possibly mean that GM might be intending that the FE continue on as the entry level 2020 and the ME be the higher level offerings. Sorta like Porsche's Boxster/Cayman being the entry level model and the 911 being the higher level entry with all the high performance models being variations of the 911..
Just idle speculation as to what might be up GM's sleeve.
Last edited by JoesC5; 03-23-2019 at 01:54 PM.
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tooold2race (03-24-2019)
#1093
Race Director
For the base 2018 Stingray, the M7 amounted to 13% of production.
Maybe GM doesn't feel that that is enough take to warrant the expense of having two transmissions available. IF the order guide is for an upgraded FE 2020 Corvette, then it not having a GS, Z06 or ZR1 offered could possibly mean that GM might be intending that the FE continue on as the entry level 2020 and the ME be the higher level offerings. Sorta like Porsche's Boxster/Cayman being the entry level model and the 911 being the higher level entry with all the high performance models being variations of the 911..
Just idle speculation as to what might be up GM's sleeve.
Maybe GM doesn't feel that that is enough take to warrant the expense of having two transmissions available. IF the order guide is for an upgraded FE 2020 Corvette, then it not having a GS, Z06 or ZR1 offered could possibly mean that GM might be intending that the FE continue on as the entry level 2020 and the ME be the higher level offerings. Sorta like Porsche's Boxster/Cayman being the entry level model and the 911 being the higher level entry with all the high performance models being variations of the 911..
Just idle speculation as to what might be up GM's sleeve.
#1095
Team Owner
#1096
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#1097
Burning Brakes
you FE people are delusional. Enough already.
#1099
Race Director
Not a bolt in operation. Would need to re-engineer the car.
#1100
Melting Slicks
The first cars to utilize OHC engines was the Maudslay designed by Alexander Craig and introduced in 1902 and the Marr Auto Car designed by Michigan native Walter Lorenzo Marr in 1903. The first DOHC car was a 1912 Peugeot which won the French Grand Prix at Dieppe that year.