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Old 12-28-2006, 04:41 PM   #1 (permalink)
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6l80e?

I was at the dealership today and noticed a posterboard for a 6l80E tranny. anyone know anything about it? I was busy so i didnt have a chance to ask about it. im kinda curious what it comes in and the gear ratio and such. all i do know is it is a 6 speed auto.

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Old 12-28-2006, 06:18 PM   #2 (permalink)
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Stole this from another site:

Transmission Hydra-Matic 6L80
Type Six-speed for rear wheel drive, clutch-toclutch architecture with integral control module
Maximum engine torque 430 lbft (583 Nm)
Maximum gearbox torque 664 lbft (900 Nm)
Gear ratios
First 4.02:1
Second 2.36:1
Third 1.53:1
Fourth 1.15:1
Fifth 0.85:1
Sixth 0.67:1
Reverse 3.06:1
Final drive 3.23:1
Maximum shift speed 6500 rpm
Case material Die-cast aluminum
Torque converter size 258 mm (10.2 in)
Transmission mass, wet 212 lb (96.1 kg)
Fluid capacity About 10.1 L (10.7 qt)

I think it comes in high $$ stuff like Cadiallac STS's & the SUV's just started using it.
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Old 12-28-2006, 07:01 PM   #3 (permalink)
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430 lb.ft of torque
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Old 12-28-2006, 07:05 PM   #4 (permalink)
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nice low first gear
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Old 12-28-2006, 08:26 PM   #5 (permalink)
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Correct me if I'm wrong but I thought the 6L80E was GM's code for the Allison 1000.
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Old 12-28-2006, 08:36 PM   #6 (permalink)
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I've had some time to look it up online and this tranny will be in 25+ gm vehicles in 07. For someone with the money its probably a viable option for a street-able 4x4.

http://gm.wieck.com/forms/gm/previewpage?026553
pics with tcase attatched
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Old 12-28-2006, 08:37 PM   #7 (permalink)
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Correct me if I'm wrong but I thought the 6L80E was GM's code for the Allison 1000.
i dont believe so
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Old 12-28-2006, 09:00 PM   #8 (permalink)
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The 6l70e, 6l80e, 6l90e and all models are GM's new generation of automatic transmissions schedueled to replace all the 4l80e's and 4l60e/65e/70e's. The ratio's are awesome, we'll see how fast the aftermarket catches up when they are mass distributed in all GM trucks next model year.
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Old 12-29-2006, 01:55 AM   #9 (permalink)
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Originally Posted by bggrnchvy View Post
The 6l70e, 6l80e, 6l90e and all models are GM's new generation of automatic transmissions schedueled to replace all the 4l80e's and 4l60e/65e/70e's. The ratio's are awesome, we'll see how fast the aftermarket catches up when they are mass distributed in all GM trucks next model year.
I dont beleive there is a 6L70e...could very well be wrong tho.

the 6L50e will come about sometime in early 2007. Early 2007 will see the departure of the 4L60 from the tahoes/burbans/yukons (its about time). GM wanted to get the 07 tahoes on the market ASAP, and for good reason. But unfortunatly that meant subbing in the old 4L60 for the first year until they got the new 6-speeds all worked out. The 6L80 is a nice trans with new stuff like clutch to clutch technology, better adaptive shift managment, some other allison-ish features...its working well in the escalade and denali behind that purdy new 6.2 liter V8 (403hp/417tq! ) but its not a heavy duty towing trans by any means. The 6L90 will be the standard trans in teh HD trucks with the 6.0 gasser. Only trans availible for the duramax will be the same allison 1000. 8.1 gasser is dead, no one knows if something will replace it...so for the next gen -900 HD's its either the 6.0 or the dmax.

GM's code for the allison is:

M74 for the 01-05 5 speed ally
MW7 for the 06+ 6 speed ally
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Old 12-29-2006, 07:52 AM   #10 (permalink)
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The 6l80E/90E have standalone computers that talk to the PCM. That will make swaps into earlier trucks hard till someone hacks the software to make it work with earlier PCM's. Or as a total standalone trans.
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GM Gen III/IV V8 swap info

TECH: Gen III/IV "LS motor" to Early GM Auto Trans
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Old 12-29-2006, 11:59 AM   #11 (permalink)
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the 6L80e, as far as transplants, will be very tricky to impliment. In the GMT-900 trucks and SUV's the TCM is completely dependant on the ECM to allow defuel during shifts. Unmanaged torque, desired torque, requested torque, defuel quantity, range select, driver shift request, PNP status, its all relayd from the ECM with data (high speed GMLAN). WIthout the ECM giving the TCM all this info it has no idea what to do. Being a clutch to clutch transmission it will be very tough to get the trans to NOT shift like a bus without active defuel from tjhe ECM. Obviously defuel request would not be availible on something other than an OEM aplication (or anything besides a gm Gen IV V8 that has an ECM that speaks GMLAN), so I dont think it would be "ideal" as a swap. It would be fun if it could be made to work nicely tho. The low 1st gear and tall second overdrive would be a great alternative to the typical TH350/400/700r4/4l60/4l80 transmission apps.
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Old 12-29-2006, 12:21 PM   #12 (permalink)
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Quote:
Originally Posted by DURAtotheMAX View Post
the 6L80e, as far as transplants, will be very tricky to impliment. In the GMT-900 trucks and SUV's the TCM is completely dependant on the ECM to allow defuel during shifts. Unmanaged torque, desired torque, requested torque, defuel quantity, range select, driver shift request, PNP status, its all relayd from the ECM with data (high speed GMLAN).
I basically said all that in layman's terms!

But anyway I think as the software gets hacked some one will come up with a standalone for a carb. and a interface to the Gen III pcm for fuel injection.

I think a 6.2L L92 and 6l80E swap would be inorder anyway!

Oh, Duratothemax you know the physical size of those trans. Everything I have seen/heard is they are about the same size as a 4l60E. I have yet to see one in person and put a tape on it.
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GM Gen III/IV V8 swap info

TECH: Gen III/IV "LS motor" to Early GM Auto Trans
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Old 12-29-2006, 02:08 PM   #13 (permalink)
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Found this on the web. This may be the answer for diesel and early gassers that want a newer auto..

Quote:
Delco makes a
stand-alone transmission controler with LOTS of parameters. It's the16128420
transmission ECM. Natively used to control a 4L80E in diesel trucks which
have no engine ECM. I think it may be limited to 4-speeds (or less) with TCC
clutch.
It is OEM hardware (read-well built) and is supported by TunerCAT and uses
a socketed EPROM and can be real-time tuned with an emulator. Also
diagnostics supported by many scan tools including EASE and Snap-On.
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Old 12-29-2006, 03:26 PM   #14 (permalink)
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Bill don't think that standalone will work with the newer trans. basicly because of what the duratothemax explained being for one a complete clutch to clutch trans and shifiting.

I am sure someone will hack it and make something.
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GM Gen III/IV V8 swap info

TECH: Gen III/IV "LS motor" to Early GM Auto Trans
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Old 12-30-2006, 12:47 PM   #15 (permalink)
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Originally Posted by Bill usn-1 View Post
Found this on the web. This may be the answer for diesel and early gassers that want a newer auto..


that will not runa 6L80

works completely differently than the 4L60/80 tranny's
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Old 12-30-2006, 01:02 PM   #16 (permalink)
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I basically said all that in layman's terms!

But anyway I think as the software gets hacked some one will come up with a standalone for a carb. and a interface to the Gen III pcm for fuel injection.

I think a 6.2L L92 and 6l80E swap would be inorder anyway!

Oh, Duratothemax you know the physical size of those trans. Everything I have seen/heard is they are about the same size as a 4l60E. I have yet to see one in person and put a tape on it.



nah Ive never seen one, crawled under a new gangster mobile at the caddy dealer but didnt have a tape measure with me. Looks bigger than a 4L60, but as I said I didnt have a tape with me. Theyre about 250 pounds with fluid I think, the specs are posted above in this thread I think.

Im not even sure if they make a 2wd version of it or not...I dont thionk you can get 2wd denali/escalades anymore?? Dunno what bolt pattern it would be, I think the denali/escalades use the BW4408 (or 4410? I forget) full time awd xfer case, whatever bolt pattern that is. Unfortunatly you probably wouldnt be able to make a manual valebody work in it. The TCM might not like offroading duty tho, its programmed similar to the allison TCM, lots of abuse protection. If you do something it doesnt like it will say screw you I do what I want. Ive thrown my allison in reverse crusing down the highway, nothin happends, it bumps into neutral and says "RANGE SHIFT INHIBITED" in the driver info center. Same thing if you throw it in 1st gear on the highway. Of course putting it in park going down the highway is a different story tho, I will never do that.

as for making it work with swap's, nothing is impossible. People said putting the 2006 allison "tap-shift" (the tip-tronic style +/- shifter buttons on the 2006 dmax trucks) on a 01-05 truck was impossible but I figured it out with one of my friends helping on the digital circuit design part....

but ya, the full escalade engine/trans swap would be the ultimate for wheeling. 403hp 417 torque...I should put that in my vw beetle buggy...Ill be waiting for y'all at the top

ben
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Old 12-30-2006, 11:48 PM   #17 (permalink)
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Man, it would be in a two drive car for now, but I haven't heard of a 2wd 6l80e other than the Aussie holden with the L76 6.0 and 6l80E it's two drive. So I think it can be done.

I been waiting on getting a new silverado until they make the 6L80E an option in 08 of so!
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GM Gen III/IV V8 swap info

TECH: Gen III/IV "LS motor" to Early GM Auto Trans
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Old 12-31-2006, 06:22 AM   #18 (permalink)
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Does anybody have more info on this, or were I can look to find info. Maybe a price?


(Delco makes a stand-alone transmission controler with LOTS of parameters. It's the16128420 transmission ECM.)
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Old 12-31-2006, 08:02 AM   #19 (permalink)
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I found it by doing a google and I'm also on a couple of FI email list.

I would recommend starting with a google search then you can use the part number listed at one of the gm-parts.com sites to get an idea of the cost vs after market stand alone units. There are several others out there.
Here's an example:
powertrain control solutions/

You may also want to check out www.tunercat.com for the GM editing support.

yes I knew the GM unit would not control all the new transmissions. I was just presenting as an option for guys who want a newer electronic overdrive tranny. Not specifically for the 6l80.
The original post stated 4l80e and probably would only work on 4 speed autos.
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Old 01-01-2007, 09:06 AM   #20 (permalink)
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Originally Posted by Red Chevy View Post
Does anybody have more info on this, or were I can look to find info. Maybe a price?


(Delco makes a stand-alone transmission controler with LOTS of parameters. It's the16128420 transmission ECM.)
If your asking about the 4L60/80E 4 speed trans. yes it will work.

As for the 6l80E/6l90E trans. NO that controller will not work with these 6 speed transmissions!!!!


Looks like these guys are working on a controller for the 6l80Es. http://www.powertraincontrolsolution...content-4.html
PCS - Powertrain Control Solutions - Programmable Electronic Automatic Transmission Controller. They may already have one.


More info on the 6l80E!
http://www.cadillacfaq.com/stsfaq/ts...-07-30-023.pdf
05-07-30-023.pdf (application/pdf Object)









Pictures of the 6L80E 2x4 trans in the Aussie Holden Comadore and the new Caddy CTS-V.

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GM Gen III/IV V8 swap info

TECH: Gen III/IV "LS motor" to Early GM Auto Trans
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Old 01-02-2007, 12:52 AM   #21 (permalink)
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hopefully PCS has sped things up because they have been saying the Allison TCM is "close to production" for about a year...

hopefully the 6L80 controller will be sooner...
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