Transmissions and Drivetrain Need help with your trans? Problems with your axle?

5 and 6speed auto's

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Old 06-03-2006, 09:44 PM
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Car: 92Z28,98LegacyGT,ZX9R,91 Z28,02 Z71
Engine: 350,307,2.5,900cc,5.0
Transmission: 700r4,4spd auto,700r4,4L80
Axle/Gears: 323,?,323,?,373
5 and 6speed auto's

GM has these trans in some of their caddy's.I'd like to put one in my Z28
I wonder if they have universal mounting holes.I'm sure they'll become more and more available as these cars hit the streets.It should be easier the going to a manual trans.


Old 06-03-2006, 10:20 PM
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Car: 1989 Formula 350
Engine: L98
Transmission: 700-R4
Those transmissions are very expensive and are computer controlled. It would be alot easier to go with an older style transmission IMO unless money is no object. You would probably be the only person with one in a thirdgen though.

Mercedes has a 7 speed automatic transmission if I'm not mistaken

Last edited by 89TPI350; 06-03-2006 at 10:28 PM.
Old 06-04-2006, 01:17 AM
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Originally Posted by Z03Z28
It should be easier the going to a manual trans.
Its probably a real PITA to get it in. Id imagine all the mounts are in different places, and there probably wouldnt be any torque arm provisions. It also wouldnt bolt up to a small block, not without some sort of adapter. It would probably be easier to swap the caddy engine, trans, and all into the car, but even that would probably be a pain. Like everything with cars, imagine how hard it is, and then multiply that by about 10. That usually seems to be a good approximation for my projects. It seems sooo easy thinking about it: bolt this up, weld that, etc., but you know how reality is... One of these days I have to figure out how to get around that. Things would be so much easier.
Old 06-04-2006, 10:58 AM
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I have my eye on the new 2007 6L80E auto 6-speed that is coming out in the new Vettes and am planning a retrofit into one of my vehicles. My problem with the Camaro swap would be it has a different trans mount pattern being a 60*V6 but a company sells a 60*V6 to SBC V8 adpater plate that is 3/8" thick and should work.

Anyways, besides that hurdle (I don't think anyone else here will have to worry about that so I woun't bother with the details as to why I want to keep the V6- either you are familiar with my car's ability or not). I have been trying to find more info on these trannies but they are still so new and apparently not readily avaliable. They are options in both the Corvette and the SUV's from what I have read and have a shift pattern of:

P R N OD D M

M= electronic manual gear seletion mode.

There are companies like TCI that make controler modules right now for the use of an eletronic 4L60e/or 4l80e 4 speed trans right now into a car that was not equipped for such from the factory. Its called a TCU controller. I am quite positive that eletronic signal controller will work for the just the same for the trigger on the six-speed the same a just triggering the 4-speed upsifts and downshifts. Just put the automatic gear selector into the "2nd" position on the Camaro console (which 2 would now represent M/ P R N OD D 2 1 now just becomes P R N OD D M (1 nolonger used) and in "M" selection you simply click or press the buttons on the wheel for upshifts or downshifts.

With a TCU controller, you then have the choice of installing either "Paddle Shifters" or a steering wheel with electronic button shifting.
I would opt more for a Sparco racing wheel with the electronics on it.(ps- horn CAN be fitted to this wheel)
http://www.sparcousa.com/psteering_street.asp?id=286
or you have this choice for paddles
http://www.twistmachine.com/

Dean
Old 06-04-2006, 11:09 AM
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The only picture I have found yet of a 6L80E is on PATC's website but showns no info on the 6 speed other than a cutaway sketch, then has controller info down below the pictures for the 4l80E 4-speed electronic trannies.

The 6L80e is the first one pictured, the 6L90e is the same but with the transfer case assembly for the SUV application.

6L80 / 6L90
Old 06-04-2006, 01:54 PM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
All the controllers are an overpriced waste of money.

I can run a 4l60E or a 4L80E for about $200 including software, making a chunk of harness and snagging a late TBI ECU.

Piggyback in about 4-5 signals needed from the stock ECM and away I go :-)

Save your money and do it how the factory intended, unless u want garbage like the paddle shifter :-) (which for note, wont work like your thinking unless u do extensive calibration on the trans ecm or controller anyhow)

The new gen of trans are very very appealing to me, as I'm sure they are to you. Mating them to conventional v8's wont be a problem at all, guys with 6 bangers will habve bigger issues which are already getting addressed.

I love the fact that there are multiple versions of the trans and I believe 2 cases and 14 different variations of the actual trans build.

What are the exact signals the trans end of things needs from the ecm to make it function............................(supposedly the trans controller is in the trans itself, so how much input does it need from everything else to function)

We need to get all the answers.

Not too mention the actual requirements of the tranny itself.

later
Jeremy
Old 06-04-2006, 04:11 PM
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Car: 92Z28,98LegacyGT,ZX9R,91 Z28,02 Z71
Engine: 350,307,2.5,900cc,5.0
Transmission: 700r4,4spd auto,700r4,4L80
Axle/Gears: 323,?,323,?,373
I think in a couple of years they will be cheaper & easier to get.You know they'll be in the new F bodies and any other rear drive V8.I may have to wait until someone else does it but it will be done.You know someone will make a kit to put in the older muscle cars just like they did with the 6speed man trans.I'm going to find out what bolt patern they are then get my trans and start from there.
Old 06-05-2006, 08:41 PM
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Originally Posted by 3.8TransAM
All the controllers are an overpriced waste of money.

I can run a 4l60E or a 4L80E for about $200 including software, making a chunk of harness and snagging a late TBI ECU.

Piggyback in about 4-5 signals needed from the stock ECM and away I go :-)

Save your money and do it how the factory intended, unless u want garbage like the paddle shifter :-) (which for note, wont work like your thinking unless u do extensive calibration on the trans ecm or controller anyhow)
Hence the reason for buying TCI's T-COM Trans control unit. With user friendly programable box, it will shift as you would want it to spontaniously.
Unless you have the software and knowhow to screw with a trial and error process of trying to program a factory ECM into your non-trans control car, this kit is built exactly for this very reason to be user friendly. For $650, your done (harnesses, software, adjustability at all times to taylor shifts to how you desire. Not a waste of money for myself to have quality parts tried and true. Factory ECM's are not adjusted for performance and would have to be specially programed to do so.- my personal opinion)

Last edited by BioV; 06-05-2006 at 08:46 PM.
Old 06-06-2006, 10:48 AM
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Car: 90' Trans Am
Engine: 94' LT1
Transmission: Built 700R4
6L80 will work where any 4L80 worked before...which includes Fbodys.....you can set it up for paddle shifting

If you do a search about a month or two ago I posted alot of info on this and other transmissions...including the GM pdf
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