Who will be the first to try and stuff a C8 Transmission in a C6 and make it work?
This swap is not for your street car.
If you are a track guy who is looking into a sequential trans swap (on the order of $30k), this C8 trans swap might be a good alternative.
If you rip around on your local streets, this is not for you, I mean unless you have a thick wallet and just want to be different.

I have seen the C8 trans sell used for 5k, if it was only another 10k to get it all in there and working its worth it.
Then we can stop the PDK crowd from talking smack.

All street car guys, no need to comment unless you are genuinely interested in making this happen.
This is a new rear subframe, cutting into the chassis may be required, rear section of the exhaust will be changed. will require another computer to run it.

I'm really hoping a shop like G-Speed, Phoenix Performance, LG Motorsports..... might be interested in the idea, they have expertise at doing something like this.

Why? On the track I race on, we have a few low speed 20-25mph turns, 1st gear is too low and 2nd gear is too high. The PDK guys rip thru there while I either smoke the tires or lag for a second based on 1st gear or 2nd gear. Yes i can swap to 3.90 gear to allow 2nd to work better. Or go down to a 335/30 tire to lower the gear ratio.
But ya know, after being on track with a PDK, They shift in less than half the time that i do. and that's like 4 or 5 feet they pull ahead. If i could be in the right gear all the time and shift really fast that would be really cool.
Of course if my car were a street car, i would love my TR-6060, and never give it a thought. But My car is a track car, and i want to shift really fast.

 

Not even sure it's possible, the BCM and other components won't be too happy.

 

Everything is possible with enough tenacity and know how.
Its not going to be easy, if it was everyone would do it.
Imagine if some shop built this, then offered a kit with instructions.
They supply the new rear cradle, harness, computer, axels??
The Consumer supplies the trans, c8 shifter paddles.
If the total was say 15k, the trans are about 5k, that leaves 10k for the shop.

I would buy this for 15k.

 

I like my 6 speed manual just fine, thank you.

 

Me too. Unavailability of a manual tranny in a C8 is the only reason one's not sitting in my garage.

 

Couple things:
A) its huge therefore without cutting it up your car substantially it wont fit. Even at that point based on where the axles set I'm not sure its dimensionally possible and would probably hang out of the back of the car (see pic below and note the position of the axle mounts)
B) its designed as a transaxle and also designed to bolt directly to the bell housing of the motor.
C) no stand alone electronic controller exists for it, especially one that would pair with a now archaic e38 ECU and actually function.
D) their having issues with them in the c8 so why throw away your bullet proof 6l80e or tr6060/t56 for something that is a known problem child
F) good luck getting one for a reasonable price, The dealers can't get them for c8 customers who are having issues.

Your right, with enough money and tenacity anything is possible, hell I'm all for retrofitting new tech into older cars, but at some point you have to ask yourself what am I really gaining other than headache and the ability to say I did it... Newer isnt alway better either. C6 is graced with having 3 of the best transmissions GM ever offered. A properly tuned 6l80e will never be as lighting fast shifting as a DCT but close enough the average person wont know the difference.



Also for reference heres a picture of a 6l80e connected to a c6 diff... again note the axle placement


And again for reference, the relatively compact tr6060

 

I think if you really want a DCT, you should just buy a C8. A C6 with a DCT would be a monstrosity that would be difficult to get rid of.

 

[QUOTE=StayinStock;1606113160]Couple things:
A) its huge therefore without cutting it up your car substantially it wont fit. Even at that point based on where the axles set I'm not sure its dimensionally possible and would probably hang out of the back of the car (see pic below and note the position of the axle mounts)
B) its designed as a transaxle and also designed to bolt directly to the bell housing of the motor.
C) no stand alone electronic controller exists for it, especially one that would pair with a now archaic e38 ECU and actually function.
D) their having issues with them in the c8 so why throw away your bullet proof 6l80e or tr6060/t56 for something that is a known problem child
F) good luck getting one for a reasonable price, The dealers can't get them for c8 customers who are having issues.

Your right, with enough money and tenacity anything is possible, hell I'm all for retrofitting new tech into older cars, but at some point you have to ask yourself what am I really gaining other than headache and the ability to say I did it... Newer isnt alway better either. C6 is graced with having 3 of the best transmissions GM ever offered. A properly tuned 6l80e will never be as lighting fast shifting as a DCT but close enough the average person wont know the difference.


I respectfully disagree with you on every point you made. However I think my goals might be different than your average Corvette owner.
I don't care if i have to cut a hole in the chassis, or move something here or there in the name of performance.

A) It is tall on the top, however the oil cooler could be removed from the top and relocated, therefor making it not that tall.
B) No problem, The Torque tube would need to be longer anyway so coming up with an adaptor plate is no sweat. People use adaptor plates all the time for LS to Porsche tranns. Toyota to Porsche....
Bb) The thing will stick out past the rear axel but will not go past the bumper, My car is on the lift right now and i measured, there is plenty of room between the bumper and the axel to fit this guy. You wont be able to have 4 exhaust pipes though, there is room enough for 2 that are spaced wide.
I actually love this feature, I believe that weight distribution should be more 45 front 55 rear, Ferrari actually wrote one time that a front engine car should have a 47 53 distribution. So putting the weight back farther will help with that.
C) This is the money maker for the shop /person who comes up with the Swap kit. It will take someone with PLC programing experience to figure this out.
D) These issues will get ironed out, my best guys at Chevy are on it
E) I just googled it, and saw 5 for sale between 4500 and 5500. and there are more every day.
F) Why? On the tack i race on, we have a few low speed 20-25mph turns, 1st gear is too low and 2nd gear is too high. The PDK guys rip thru there while I either smoke the tires or lag for a second based on 1st gear or 2nd gear. Yes i can swap to 3.90 gear to allow 2nd to work better. Or go down to a 335/30 tire to lower the gear ratio.
But ya know, after being on track with a PDK, They shift in less than half the time that i do. and that's like 4 or 5 feet they pull ahead. If i could be in the right gear all the time and shift really fast that would be really cool.
Of course if my car were a street car, i would love my TR-6060, and never give it a thought. But My car is a track car, and i want to shift really fast.
So my question still stands, Who is going to make this a reality?

 

well... keep us updated i guess... Seems like a complete waste of effort and money to me. I can almost promise you it wont be a money maker for anyone, your talking about a very very limited market of people who would be willing to do this. Most die hard track guys won't give up their third pedal for a DCT, much less at the cost of a spec Miata... Any shop that invests in this will be lucky to break even with the cost of r&d. Don't get me wrong, it would be cool, but I dont see too many folks lining up to shell out 15-20k for one.

 

Honestly food for thought but if you were really going to go for it why not use the GT500 Trans, its small enough you could probably mount it behind the motor with less modification than the c8 one. Again the same electronics issues come to mind but might be a better starting point atleast. Also for that matter I don't think they've had half the issues GM has with theirs. Seems a lot more feasible to me.

 

If you get it to fit looks like a wayyy longer torque tube and muffler delete at the very least

 

I would think a more feasible swap would be an 8 or 10 speed auto transmission from a C7 Corvette or 6th Gen Camaro. Extremely fast shifting transmission and much more likely to fit. I have no idea on what would need to be done however.

 

Theres a shop in Summit Point WV whos currently working on an 8 speed swap into a c6 from a c7. Last i heard they were getting pretty close on it. The 10 speed is pretty large in comparison

 

simple question?

WHY?

 

I think you watch too many car rebuild programs

 

custom rear subframe, cutting into the trunk tub, possibly having to build new fuel tanks (or reengineering the crossover), frame positioning issues, exhaust removal or reengineering, custom axles, custom driveshaft (and torque tube with applicable bearings), alignment of components, mounts, torque and power ratings of said custom components, reengineering the rear suspension (alignment issues again), and that's just the mechanical stuff. That's not even touching the electrical side of the house.

 

You're going to spend more on this than your car is worth. I was looking at 30k to swap in a 10 speed and that was a big "maybe" if it would even work.

 

This swap is not for your street car.
If you are a track guy who is looking into a sequential trans swap (on the order of $30k), this C8 trans swap might be a good alternative.
If you rip around on your local streets, this is not for you, I mean unless you have a thick wallet and just want to be different.

All street car guys, no need to comment anymore unless you are genuinely interested in making this happen.
Already stated this is a new rear subframe, cutting into the chassis may be required, rear section of the exhaust will be changed. will require another computer to run it.

I was really hoping a shops like G-Speed, Phoenix Performance, LG Motorsports..... might be interested in the idea, they have expertise at doing something like this.

 

They have the expertise to know its a terrible idea and not worth the cost of R&D but its a nice pipe dream, let us know if you figure it out.

 

Stayin Stock, Hey man, i invite you to Stay Stock.
Race cars are worth 100k, or more, or less. Based on your writing it appears that you are not familiar with race car budgets or spending, so commenting on the value of a car is not in your wheelhouse.
Racing is about winning for most teams. If a sequential transmission like previously stated costs ~30k and reduces lap times by .5 second per lap, it might be worth it to that team / driver.
What I am proposing could potently cost half of that and put it in reach of more drivers / teams.

So, If you are not going to bring positive things to the conversation, please don't crap up my thread.