Can you install a 2800 9/11 TC in a stock tranny?

[Tooky]

For a long time I had a plan that when I upgraded the turbo I would install a 2800 9/11 TC and all would be well. Recently I heard discussion that this is not the case; my tranny would stall at 5000 RPM and shifts would happen at 6000 instead of the proper 4500 for stock truck, due to improper line pressure. Is this true? If so, what would be required to properly run the 2800 9/11 TC? Is a performance tranny rebuild mandatory? I want to run a larger turbo with streetable quick spool but I want to keep the RPMs low as stock. Thanks,

Josh

 

[Maxtor]

Not sure what you heard... but my shift points didn't change a bit. You should install an external/aux cooler if going to the 9/11 - you will build more heat.

 

[E-Rue]

all that stuff you were told is crap.

when you install that converter it shouldnt change your line pressure. even if the line pressure was changed, it wouldnt change the stall to 4000rpm instead of the rated 2800rpm. the only time you should have problems with your shift point, is if you have a stout built tranny with greatly increased line pressure on a stock motor. even then it wouldnt increase your shift point that much. thats just the craziest crap ive ever heard. someone should be shot for filling your head with garbage. whoever told you that..... go slap his mother for making such a dumb basterd.

e

 

[smeagol]

I've seen many trucks get too loose a 9-11 and shift points WILL increase on a high stall converter. The loose 9-11 was a very common problem way back when i first saw them out there, and i'm not sure this issue is completely solved. Reason that a shift point will go up with a stall converter is that the higher stall converter is slipping more at a given road speed than a stock converter. Shift points go off of road speed, not engine speed (in our application). Have too loose a converter? You'll have high shift points. I had this problem, Max had this problem a while ago, Rich Eartly's has this problem, Bw's 9-11 slips a lot too, and may bounce off the rev limiter. I got a different converter, my shift points are back how they should be, truck feels about 20 times better and is much faster.

 

[FLSY2730]

I got one of those loose 9-11s in the ty and it raised the shift points about a 1000 rpm, i think the converter i got is to loose, its a ken bell 9-11, i can stall the thing to 4000 rpm.

 

[E-Rue]

i wont argue that having a monster stall wont affect shift points. but josh is asking about a 2800 9/11. i think a converter that stalls at 3000 or less really shouldnt affect shift points much, and definately not to the extreem that josh has been told. keep in mind, it doesnt matter what the converter is rated at, but what it actually stalls at. dubbs tranny is a bad example of a converter causing increased shift points cause his is built. i would imagine his line pressure has as much to do with it as the converter. myclone has a 3000rpm 9/11 and it hasnt changed shift points. i agree with your ideas about road speed, and i think that some of the headaches you guys with huge stalls are running into is the converter is still partially stalling up to, and/or above the stock shift point (4500). and yes, id imagine that would make your tranny shift strange, and your truck feel really slow. i guess the best scenario is to stay on the modest side when selecting a converter for a stock motor/tranny.

e

 

[smeagol]

It all comes down to if you get your 'rated' stall speed. I've heard of too many instances of 9-11's stall speed varying a TON. Ask Waller, he's done many of them. If you get a tight one, great. If not, get it adjusted.

 

[Christian Dionne]

We got a TCS 9/11 that stalls to nearly 4000.

The 1-2 shifts around 5500

The 2-3 shifts around 6500

I'm not sure about the stock convertor before, but now the convertor doesn't lock as well. It has FAST and I got 12V between F and A terminals.
I also had a current between the terminals so I AssUMe that the TCC solenoid is operating.

I think we are going to send out the 9/11 when I rebuild the tranny this December.

I always wondered if the convertor was truly at fault for the high shift points. I know it kept this 11 second truck out of the 12's awhile ago.

 

[SY732]

Re: Can you install a 2800 9/11 TC in a stock tranny?

For a long time I had a plan that when I upgraded the turbo I would install a 2800 9/11 TC and all would be well. Recently I heard discussion that this is not the case; my tranny would stall at 5000 RPM and shifts would happen at 6000 instead of the proper 4500 for stock truck, due to improper line pressure. Is this true? If so, what would be required to properly run the 2800 9/11 TC? Is a performance tranny rebuild mandatory? I want to run a larger turbo with streetable quick spool but I want to keep the RPMs low as stock. Thanks,

Josh

What turbo?

 

[Captain Morgan]

We got a TCS 9/11 that stalls to nearly 4000.

The 1-2 shifts around 5500

The 2-3 shifts around 6500

dont our motors max redline at 5500???? 6500 sounds crazy to me. I just got a 3000 stall 9/11 from TCS, should be here thursday, if it bounces off the rev limiter, im gonna be a VERY pissed off camper....