PADDLE SHIFT Automatic w/ ENGINE BRAKING - Keisler A-41 for GM & MOPAR

[KEISLER]

Hi Folks,

Keisler's 4-Speed Automatic Overdrive Transmission aka "A-41"
Stage 1 450 HP, 450 FT-LB Torque
Stage 2 550 HP, 550 FT-LB Torque
Stage 3 650 HP, 650 FT-LB Torque
Sold as an Essentials Kit or Keisler PerfectFit complete kit with ALL installation accessories (crossmember, driveshaft, torque converter, flexplate, computer, app specific wiring harness, shifter gate conversion to retain factory shifter, etc - down to every nut and bolt.)

GM Owners:
You can now replace your GM Turbo 350/400, 700R4, 200R4, 4L60, 4L60E, 4L65E, 4L80. For all traditional V8 1955 - current - small and big block, and all LS engines including LQ series.
https://static1.pt-content.com/images/pt/2008/12/6769CamaroFirebirdA41_A-1.jpg

MOPAR Owners:
You can now replace your Torqueflight 727A, 727B, 904, A518, A500, 45RFE. For all traditional A, LA, Magnum, B, RB, HEMI gen 1, HEMI gen 2, HEMI gen 3
https://static1.pt-content.com/images/pt/2008/12/MoparEBody7074A41_A-1.jpg


Please check out our special in the Advertiser's section for Pro-Touring members. Click here for the link (https://www.pro-touring.com/forum/showthread.php?p=473578#post473578)

Now for the good part - the TECH details:

The key feature with our product is the fact that we have added engine braking to 1st, 2nd and 3rd gears, so the free-wheeling is gone (except in 4th). The result is a connected feeling and control just like a manual transmission, but with the convenience of an automatic. And this is a Hydramatic automatic, not an automated manual transmission.

The Paddle Shifter is easy to wire up - just horn power and that it. It's wireless connection to the receiver unit, which plugs up to our controller. And the paddle shifter has a nice large bright LED display that allows you to display from more than a dozen data points to monitor - vehicle speed, engine rpm, throttle position, coolant temp, turbine speed, torque converter lockup, etc.
https://static1.pt-content.com/images/pt/2008/12/PADDLE_SHIFTER_STEERING_WHEEL_240-1.jpg

When you going into paddle shift mode, you just switch the Dual Mode switch from Cruise to High Performance, put the gear selector in OD, then you have full manual control over every gear 1st through 4th. In fact, just like a manual, you have to upshift and downshift with the paddles, or you will remain in that gear. It will not upshift or downshift without your paddle touch. So, you what ever gear you paddle-up or paddle-down - 1st, 2nd, 3rd or 4th - what ever - it will stay in that gear until you tell it to shift by bumping the + or - paddle.
https://static1.pt-content.com/images/pt/2008/12/dual_mode_switch_for_a41_240-1.jpg

For track courses, this is ideal. You can keep your hands on the wheel, and be in full control of what gear your are in. With the engine braking and no free-wheeling, you can get the most out of your car and driving skill.

When you flip the Dual Mode switch back to Cruise mode, the transmission will be in full auto mode. You can bump the + or - paddle, and the transmission will not shift until its parameters tell it to. In other words, the paddle has no operation in Cruise mode.

100% DYNO TESTED, with Torque Converter - stall speeds up to 4800 RPM available

You can learn more about this transmission here (http://www.keislerauto.com/index.php?/keisler-goes-green-new-generation-automatic-overdrive-transmission.html).


Also, here is a raw video of my Pro Touring '71 Cuda with this transmission behind a 500 HP gen 3 HEMI.
Paddle Shifted A-41 in Action (http://www.youtube.com/watch?v=40p3VWWwjOE&feature=user)

We do these as complete kits, there is no cutting whatsoever, and I'd like to offer some special discounts to those of you willing to help us promote the product at your shows.

No salesman speak here ... this transmission is simply incredible.

[go-fish]

Good to see you here Shafi. I have the TKO kit and FWIW, I am trying to get my Dad to bite on a paddle tranny kit for his 69 RR (pretty much because I think I'd get to drive it alot).

[hotrdblder]

looks great, however the last i talked with mark bowler, there was no current way to get engine braking in each gear. only if not in overdrive and in 3rd gear only.
how do you guys shift the tranny with the paddles? thru the solenoids or with an actuator on the side of the transmission/? very interested in this product.
any video showing downshifting with engine braking in each gear?
lastly, are these kits available now?

[KEISLER]

looks great, however the last i talked with mark bowler, there was no current way to get engine braking in each gear. only if not in overdrive and in 3rd gear only.
how do you guys shift the tranny with the paddles? thru the solenoids or with an actuator on the side of the transmission/? very interested in this product.
any video showing downshifting with engine braking in each gear?
lastly, are these kits available now?

Hi Hotrdblder,

Our product is not Bowler's. We have engine braking in 1st, 2nd, and 3rd gear. This is achieved through hydraulic circuit and electronic control changes. There are no additional solenoids or periphery equipment other than the paddle shifter.

From an outward appearance the trans looks identical to our non-paddle shifted automatic.

Here is a raw video of my Pro Touring '71 Cuda with this transmission behind a 500 HP gen 3 HEMI.

Paddle Shifted A-41 in Action (http://www.youtube.com/watch?v=40p3VWWwjOE&feature=user)
In that video, you will see a segment where we are downshifting with no brakes - only using engine braking. When we come to almost to a stop, we apply brakes. Please watch that section closely.


Yes, the kits are available now and have been shipping already.


Quite cost effective, you can get our Stage 1 450 HP / 450 Torque kit for $2995, and the Paddle Shifter with Engine Braking Upgrade for only $895.

[Steve Chryssos]

....Quite cost effective, you can get our Stage 1 450 HP / 450 Torque kit for $2995, and the Paddle Shifter with Engine Braking Upgrade for only $895.

I'll try to remain technical here. The engine braking mod is not recommended for stock transmissions. And yes, the engine braking mod works in all gears except when the gear selector is in OD (Fourth gear).

[MarkB]

Jake,

We have offered the engine braking option for the 4L60E/4L65E/4L70E since early '07, we made updates to the package in September. I may of mis-understood when we talked, I thought you was interested in the 4L80E engine braking. At that current time we did not offer anything for the 4L80E. We are working on the 4L80E at this time. As for the 4L60E, just as Keisler said, the 4L60E is done with just hydraulic circuit change. Retrotek and MasterShift offer options with an actuator to move the gear selector. Bowler and now Keisler is doing this with internal changes through the valve body. This has been a great modification, especially for all of the Pro-Touring cars.

Shafi, glad to see someone else actually pushing automatics to perform and to prove what can be done with them. Welcome to the site.

[KEISLER]

I'll try to remain technical here. The engine braking mod is not recommended for stock transmissions. And yes, the engine braking mod works in all gears except when the gear selector is in OD (Fourth gear).

:confused: Steve - I think you are confused.

Our transmissions with engine braking are NOT stock - they are highly modified. Every unit is dyno tested with torque converter.

With all due respect, this is a thread on the Keisler product, not stock GM or Bowler, and I believe I adequately answered the question.

[6'9"Witha69]

:grouphug:

[Steve Chryssos]

No I'm not confused.

[AJSZR2326]

in overdrive letting the tranny act automatically what are the shift points set at? rpm wise up and down shifts? thx

if my engine is putting out 630hp 615tq what is recommended and how much ?

[KEISLER]

in overdrive letting the tranny act automatically what are the shift points set at? rpm wise up and down shifts? thx

if my engine is putting out 630hp 615tq what is recommended and how much ?

Our part throttle up and down shifts are set on a curve, which is dependent on the Throttle Position Sensor (TPS) included in the kit (or using the existing TPS mounted on the throttle body, if equipped).

As a general rule, the shifts get more aggressive the more you are into throttle. A wide open throttle is typically set at 5500 RPM, but can be adjusted up or down, by the user or us. We preprogram the controller for the customer's application.

You will use the Stage 3 A-41, 650 HP, 650 Torque. We have customers run more than this with it, but this is the limit we are comfortable to set. As for price, I will PM you with this.

Thanks for posting,

Shafi