GM auto trans

[G-E]

Steve88t wrote: Specifically that the gains are from increased line pressure and not by increasing the holding capacity of the packs themselves. Line pressure is often part of the equation as you cant increase surface area or CF on every component. He hinted at removing a few marcel plates and replacing them with friction disks and/or flat steel plates.

I'm not versed well enough in auto tranny construction to judge this. But I have seen this friend do a LOT of high capacity units with great success and trust his opinion.

it's too bad you can't give him an autobox to play with, to see what he recommends

I did notice that all the changes were line pressure related, but pressure increases clamping load just like in a clutch, does that mean it has its limits? sure it does, but the alternatives can get pricey... this is one discussion that most certainly belongs on this site, our auto is neglected as the bastard child, we should at least be fully informed about what it can do and what can be done to it if we're going to make that judgement

[Steve88t]

Someone send me a slushbox that isnt totally destroyed and I'll tear it down with him and see. My current Z31 started life as an auto...it could be swapped back if I wanted. But I like it stick.

[Bernardd]

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[Jason84NA2T]

Did either of you read the information in the link I posted yet? Thanks again bernard.

[Steve88t]

I have now....

I made the mistake of assuming the keas stuff was the same as the level 10. What is in the doc is a lot of what had been brought up in my discussion.

I wonder....same tranny in my pathfinder. Could be fun to try some of that.

[Crazy]

G-E wrote: like having 8 gears? how is that?

you mean it will be soft and act like an unlockable torque converter normally til you boot it?

the lock up takes away the stall and is adjustable by MPH with a controler

[Crazy]

Bernardd wrote: how much hp are you looking at running thru it? james thagard ran low 11's with a stock jatco (4n71b) and the level 10 mods with a 240z. jason is going to upload the keas build specs which are supposedly good enough for 350hp and drag radials with a aussie spec commodore. a better shift kit and it'll hold more.

Was he using a stall converter?

[Crazy]

Bernardd wrote: read the info from keas. it's all dealt with in there. all you need is a shift kit from him/level ten/ or make your own.

TransGo makes a shift reprograming kit, but I am not sure where to get one.

[G-E]

poor man's solution is keep the kickdown active at all times..... may not be firmer or have better clamping but it will drive more like a stick

I think hks makes a line controller, but no idea how it works, nor what it does precisely

[Bernardd]

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[Crazy]

The n/a 4n71b trans converter locks up in every gear controled by trans computer. The turbo buick guys are saying up to 2 tenths off the quarer and adding 2 mph by locking the converter. The turbo trans uses a non lock up converter. My n/a converter stalls at 1800 rpm does the turbo stall higher?

[Crazy]

I am going to give TransGo a call to see if there kit deletes the no 2-1 down shift over 25 mph