Lexus cars with 6speed auto.

[Jake Breyck]

did any 1uz or 3uz cars come with a 6 speed automatic? and if so what models and year ranges? thanks.

 

[1UZPWR]

Lexus LS430
3UZ
I think all years were were all 6 spds, but there was a change in transmissions. one used 3 sets of planetary gears, and the later years got 6 spds using only 2 planetary gear sets.

 

[1UZPWR]

Update:

2001-2003 5 spd auto
2004-2006 6 spd auto

 

[pres6]

i have heard in a few places that the 6spd will not hold much over stock power though. but it would be a highway monster..

 

[Jake Breyck]

1UZPWR: I would like to know more about what ones where 3 sets and what ones where 2 sets of planetary gears, thanks thats extly what i was looking for.

pres6: what about rebuilt?

 

[1UZPWR]

Sorry, I got the planetary gear thing wrong.

5spds have 4 sets, front, center and rear, plus a 4th for over drive.
All 6spds have 3 sets, the cool thing is that they have 1 less set, but get an additional gear. I knew something funky went on, just couldn't remember exactly what.

 

[Jake Breyck]

cool thanks. good info. happen to know the ratios in the 6 speeds?

 

[1UZPWR]

sorry, i don't
i do know that 4th is 1:1 though, so 5th and 6th are over drive

 

[pres6]

those are so new that i have not heard about any rebiulds...

 

[Jake Breyck]

pres6: im not talking about repare style of rebild ;-)

 

[pres6]

i have not heard of one even being strengthened, i am sure someone with a pocket full of cash has done one, we just have not heard about it yet...
what trans did the guy with the white convertible sc430TT use? that car was a 5spd auto stock right?
i know in the supra community there is a compnay called "level-10" that used to upgrade the a340e, even have a buddy that had one done, cost him like 3g's and he never even used it..the car got wrecked before it could be installed.

 

[Jake Breyck]

I had a level 10 trans in my first supra, 87 turbo my mom bough new that go handed down to me later on. its the car that got me into japanese cars.

 

[milnersXcoupe]

Import Performance Transmission - first choice -

http://www.importperformancetrans.com/toyotaauto.shtml



TOYOTA / LEXUS PERFORMANCE AUTOMATICS
ES300, GS300, GS400, GS430, IS300, LS 400, LS430, LX450, LX470, RX300, RX330, SC300, SC400, SUPRA, CAMRY, 4 RUNNER, CELICA, LAND CRUISER, TACOMA, T100, RAV 4, TUNDRA, JEEP AW4, ISUZU 30-40LE




REAR WHEEL DRIVE / 4 WHEEL DRIVE

* Valve body is custom calibrated to provide the ultimate in clutch application power and clamping force (The modifications performed by us are a proprietary design and are unavailable elsewhere)
* Virtually indestructible Raybestos Blue Plates are installed in all shifting clutches
* *NEW FEATURE* We have now developed the industry's only 6 friction disk C-2 clutch pack for a 50% increase in third gear holding capacity.
* New one way clutches (sprags) are installed in all locations
* Planetary splines are heat treated to prevent stripping
* Metalax treatment is applied to input shaft to eliminate stress related failure
* Sun shell is heat treated to prevent spline stripping
* New design high flow solenoid assemblies are installed
* Lube system is redesigned to provide increased flow and cooler operation
* Performance pressure regulator boost valve is installed to prevent sluggish line pressure rise and to increase clutch holding ability.

NOTE: This unit is the strongest configuration that can be achieved with this Toyota transmission. However, if you are running much faster than 9.99 we recommend the installation of a domestic three speed or Powerglide transmission. These units also enable you to enjoy the many benefits of a Trans Brake and 8", 9", or 10" torque converter. See our specialty RWD section or call us for details.


http://www.sae.org/technical/papers/2004-01-0650


Abstract:
Toyota Motor Corporation has recently developed a new six-speed automatic transmission (A761E) for Front Engine Rear Wheel Drive (FR) vehicles. Following the general trend of increased shift stages and a wider range of gear ratios, this six-speed automatic transmission has been developed with attention paid to the gear steps and a wider range of gear ratios. By balanced selection of close-ratio gears in a wider range, the change greatly improves the power performance and fuel economy of the vehicle. To further improve fuel economy we have adopted new technologies such as low-viscosity ATF, neutral control, and deceleration control by extending the fuel cut range (reset speed). We have also adopted a flat-shaped torque converter, small solenoids, an aluminum oil pump cover, etc., to realize the lightest six-speed automatic transmission in the world. This automatic transmission is low cost due to the adoption of the same gear train as the previously developed five-speed automatic transmission (A750E).




A761E

6 Speed Automatic Transmission

Applications:

* 2006-2007 IS350
* 2004-2006 LS430
* 2006-2007 GS430
* 2006-2007 SC430

Gear Ratios: 1st 3.296 2nd 1.958 3rd 1.348 4th 1.000 5th 0.725 6th 0.582 Rev 2.951

 

[milnersXcoupe]

Import Performance Transmission - first choice -

http://www.importperformancetrans.com/toyotaauto.shtml



TOYOTA / LEXUS PERFORMANCE AUTOMATICS
ES300, GS300, GS400, GS430, IS300, LS 400, LS430, LX450, LX470, RX300, RX330, SC300, SC400, SUPRA, CAMRY, 4 RUNNER, CELICA, LAND CRUISER, TACOMA, T100, RAV 4, TUNDRA, JEEP AW4, ISUZU 30-40LE




REAR WHEEL DRIVE / 4 WHEEL DRIVE

* Valve body is custom calibrated to provide the ultimate in clutch application power and clamping force (The modifications performed by us are a proprietary design and are unavailable elsewhere)
* Virtually indestructible Raybestos Blue Plates are installed in all shifting clutches
* *NEW FEATURE* We have now developed the industry's only 6 friction disk C-2 clutch pack for a 50% increase in third gear holding capacity.
* New one way clutches (sprags) are installed in all locations
* Planetary splines are heat treated to prevent stripping
* Metalax treatment is applied to input shaft to eliminate stress related failure
* Sun shell is heat treated to prevent spline stripping
* New design high flow solenoid assemblies are installed
* Lube system is redesigned to provide increased flow and cooler operation
* Performance pressure regulator boost valve is installed to prevent sluggish line pressure rise and to increase clutch holding ability.

NOTE: This unit is the strongest configuration that can be achieved with this Toyota transmission. However, if you are running much faster than 9.99 we recommend the installation of a domestic three speed or Powerglide transmission. These units also enable you to enjoy the many benefits of a Trans Brake and 8", 9", or 10" torque converter. See our specialty RWD section or call us for details.


http://www.sae.org/technical/papers/2004-01-0650


Abstract:
Toyota Motor Corporation has recently developed a new six-speed automatic transmission (A761E) for Front Engine Rear Wheel Drive (FR) vehicles. Following the general trend of increased shift stages and a wider range of gear ratios, this six-speed automatic transmission has been developed with attention paid to the gear steps and a wider range of gear ratios. By balanced selection of close-ratio gears in a wider range, the change greatly improves the power performance and fuel economy of the vehicle. To further improve fuel economy we have adopted new technologies such as low-viscosity ATF, neutral control, and deceleration control by extending the fuel cut range (reset speed). We have also adopted a flat-shaped torque converter, small solenoids, an aluminum oil pump cover, etc., to realize the lightest six-speed automatic transmission in the world. This automatic transmission is low cost due to the adoption of the same gear train as the previously developed five-speed automatic transmission (A750E).




A761E

6 Speed Automatic Transmission

Applications:

* 2006-2007 IS350
* 2004-2006 LS430
* 2006-2007 GS430
* 2006-2007 SC430

Gear Ratios: 1st 3.296 2nd 1.958 3rd 1.348 4th 1.000 5th 0.725 6th 0.582 Rev 2.951

 

[tom steele]

wonder how this a761e holds up and is there any upgrades for them yet?was going to go manuel but i dont want to have to shift in traffic so now looking into nice autos that will work better than the stock 5 speed auto