6T75 6 speed conversion
01-19-2011, 12:11 PM
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6T75 6 speed conversion We are currently working on fabbing some tranny mounts to market in the future, any ideas, requests or contributions from the community?
Let us have it!!
Let us have it!!
01-19-2011, 12:32 PM
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We're on track with the starter mount area of the project. (edit) Although, the bell housing can be milled to fit the starter, we are going to fab an adapter plate for a friendly bolt-on conversion....progress, progress.
I think it will be substantial as a simple swap. I've done a little research and it should hold 400-500 whp reliably. My only concern is holding the component substantially with a stiff but comfortable amount of travel. We don't want any broken ears, etc.
We'll probably use some poly and steel and see how it works. We'll be making a mock up for a customer today hopefully, so we'll keep you posted on how progress goes.
If anyone had any under carriage pictures of the starter, tranny, etc. it would help immensely in our R&D!
I think it will be substantial as a simple swap. I've done a little research and it should hold 400-500 whp reliably. My only concern is holding the component substantially with a stiff but comfortable amount of travel. We don't want any broken ears, etc.
We'll probably use some poly and steel and see how it works. We'll be making a mock up for a customer today hopefully, so we'll keep you posted on how progress goes.
If anyone had any under carriage pictures of the starter, tranny, etc. it would help immensely in our R&D!
Last edited by OrlandoMachine; 01-19-2011 at 12:43 PM. Reason: Addition
01-19-2011, 02:42 PM
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This is exciting news!
I guess we'll need to start researching how this swap would work with regards to the PCM, as well as what mods the trans will need to reliable handle 280+ lb-ft of torque at the wheels.
Does anyone know of any shops that mod the 6T75, or what parts are available?
I guess we'll need to start researching how this swap would work with regards to the PCM, as well as what mods the trans will need to reliable handle 280+ lb-ft of torque at the wheels.
Does anyone know of any shops that mod the 6T75, or what parts are available?
01-19-2011, 03:18 PM
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We'll prob be looking at around $300-$400 for the kit as it stands, general consensus on being worth the battle?
-Bell housing adapter plate
-Starter mounting plate
-Transmission bottom side mount (poly bushings)
And other misc. items.
Although the kit is bolt on, we will more than likely have to machine the housing of the tranny itself to accept the starter's location, i.e. hone an area for the flex plate and starter gear to meet. Thus, additional expenses will need to be done.
To compete with that idea, we could have the tranny shipped to us, do the work and mount the plates, starter, etc.
Thoughts?
-Bell housing adapter plate
-Starter mounting plate
-Transmission bottom side mount (poly bushings)
And other misc. items.
Although the kit is bolt on, we will more than likely have to machine the housing of the tranny itself to accept the starter's location, i.e. hone an area for the flex plate and starter gear to meet. Thus, additional expenses will need to be done.
To compete with that idea, we could have the tranny shipped to us, do the work and mount the plates, starter, etc.
Thoughts?
Last edited by OrlandoMachine; 01-19-2011 at 03:25 PM. Reason: Addition
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01-19-2011, 03:39 PM
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We'll prob be looking at around $300-$400 for the kit as it stands, general consensus on being worth the battle?
-Bell housing adapter plate
-Starter mounting plate
-Transmission bottom side mount (poly bushings)
And other misc. items.
Although the kit is bolt on, we will more than likely have to machine the housing of the tranny itself to accept the starter's location, i.e. hone an area for the flex plate and starter gear to meet. Thus, additional expenses will need to be done.
To compete with that idea, we could have the tranny shipped to us, do the work and mount the plates, starter, etc.
Thoughts?
-Bell housing adapter plate
-Starter mounting plate
-Transmission bottom side mount (poly bushings)
And other misc. items.
Although the kit is bolt on, we will more than likely have to machine the housing of the tranny itself to accept the starter's location, i.e. hone an area for the flex plate and starter gear to meet. Thus, additional expenses will need to be done.
To compete with that idea, we could have the tranny shipped to us, do the work and mount the plates, starter, etc.
Thoughts?
Perhaps you could include very specific machining instructions/specifications so that those of us unable to ship the trans could take it to a local shop for the work.
Just a suggestion.
That said, $300 to $400 for the kit sounds VERY reasonable to me!
01-19-2011, 03:51 PM
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Found this on ebay:
http://cgi.ebay.com/ebaymotors/HYDRA...Q5fAccessories
Granted, this is the AWD version, and the non-AWD model may even be cheaper.
This is much less than what I thought the trans would cost, and it will probably only come down more as they become more common.
Now it's a question of software and strengthening upgrades.
This is pretty encouraging, because a decent street trans from TEP is $1650, plus shipping. Add in another $200 for a rebuilt converter, $200-$300 for shipping, then another $400 to install, you're at $2500 and you still have an ancient 4-speed.
If this swap can be put together for comparable money, then the LS4 community will finally have a viable alternative to rebuilding a stocker.
http://cgi.ebay.com/ebaymotors/HYDRA...Q5fAccessories
Granted, this is the AWD version, and the non-AWD model may even be cheaper.
This is much less than what I thought the trans would cost, and it will probably only come down more as they become more common.
Now it's a question of software and strengthening upgrades.
This is pretty encouraging, because a decent street trans from TEP is $1650, plus shipping. Add in another $200 for a rebuilt converter, $200-$300 for shipping, then another $400 to install, you're at $2500 and you still have an ancient 4-speed.
If this swap can be put together for comparable money, then the LS4 community will finally have a viable alternative to rebuilding a stocker.
01-19-2011, 03:55 PM
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https://ls1tech.com/forums/ls4-front...onversion.html
The title is supposed to be 6T75, some info in there, been lurking for a little while.
The title is supposed to be 6T75, some info in there, been lurking for a little while.
01-19-2011, 05:54 PM
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We're on track with the starter mount area of the project. (edit) Although, the bell housing can be milled to fit the starter, we are going to fab an adapter plate for a friendly bolt-on conversion....progress, progress.
I think it will be substantial as a simple swap. I've done a little research and it should hold 400-500 whp reliably. My only concern is holding the component substantially with a stiff but comfortable amount of travel. We don't want any broken ears, etc.
We'll probably use some poly and steel and see how it works. We'll be making a mock up for a customer today hopefully, so we'll keep you posted on how progress goes.
If anyone had any under carriage pictures of the starter, tranny, etc. it would help immensely in our R&D!
I think it will be substantial as a simple swap. I've done a little research and it should hold 400-500 whp reliably. My only concern is holding the component substantially with a stiff but comfortable amount of travel. We don't want any broken ears, etc.
We'll probably use some poly and steel and see how it works. We'll be making a mock up for a customer today hopefully, so we'll keep you posted on how progress goes.
If anyone had any under carriage pictures of the starter, tranny, etc. it would help immensely in our R&D!
To all: Anyone who has been following this section over the past few years would know that I am a big proponent of this swap. In fact, I've been into it the moment I heard GM and Ford were developing this transmission. So much so that I've been all over the map looking for someone to work it out. I still don't understand why GM didn't/doesn't put this transmission in a W-body.
Regardless, I am the customer that he speaks of and I am eager for this to be completed.
Most of the mods I try to get going are for stock cars. So there aren't any guarantees that this will work with the headers' crossover as I don't have headers. This transmission could easily sit higher or lower than the 4T65E-HD. Time will tell.
This is exciting news!
I guess we'll need to start researching how this swap would work with regards to the PCM, as well as what mods the trans will need to reliable handle 280+ lb-ft of torque at the wheels.
Does anyone know of any shops that mod the 6T75, or what parts are available?
I guess we'll need to start researching how this swap would work with regards to the PCM, as well as what mods the trans will need to reliable handle 280+ lb-ft of torque at the wheels.
Does anyone know of any shops that mod the 6T75, or what parts are available?
The research is pretty much done. A module already exists that will mate the E40 and E67 ECMs to the T43 TCM ([literally] found inside the new clutch-to-clutch 6 speed transmissions: 6T70/75, 6L80/90, etc.).
Found this on ebay:
http://cgi.ebay.com/ebaymotors/HYDRA...Q5fAccessories
Granted, this is the AWD version, and the non-AWD model may even be cheaper.
This is much less than what I thought the trans would cost, and it will probably only come down more as they become more common.
http://cgi.ebay.com/ebaymotors/HYDRA...Q5fAccessories
Granted, this is the AWD version, and the non-AWD model may even be cheaper.
This is much less than what I thought the trans would cost, and it will probably only come down more as they become more common.
Indeed, but there's going to be a little more added to that which hasn't been discussed: module and half shafts.
EDIT: More info on the 6T75 courtesy of FastFieros: http://www.filedropper.com/6t75
FYI: The picture in the document is of the 6T70 and not of the 6T75; the 6T70 will bolt to our engines without an issue.
ECM identification: http://www.lt1swap.com/pcm_identification.htm
Last edited by GXP25; 01-19-2011 at 05:58 PM. Reason: Added some more info.
01-20-2011, 04:24 AM
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Im deffinetly game for helping out... I was just thinking the other day that this would be a perfect choice for my ls4 fiero mod...
I will try to help out as much as I can from here...
I will try to help out as much as I can from here...
01-20-2011, 02:51 PM
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https://ls1tech.com/forums/ls4-front...onversion.html
The title is supposed to be 6T75, some info in there, been lurking for a little while.
The title is supposed to be 6T75, some info in there, been lurking for a little while.