What stall are you using? i would like the year of vehicle, trans, brand, stall, str, and how you like it.
ME:
1994
4l60
Yank
4000
2.4
Havent installed it yet. Going in with the motor swap. Should be a blast.

 

1993 4L60

Precision Industries Vigilante 2800 stall.

Very streetable and gives me a 1.67 60' on drag radials with 3.45 gears on a 3500# race weight.

 

What is str?

 

1985 rossler built 700r4
custom tci 4500 non-lock up
60' - 1.51 to 1.54 depending on track

 

THE TRUTH ABOUT STALL TORQUE RATIO

STR has been talked and argued about for many years. The following information is what we at Precision Industries have found by doing our own testing to be helpful for you to try to understand this subject. Our competitors must have a crystal ball to figure the STR of their torque converters. There are a couple of companies in the performance torque converter business that do have the capability to test STR, MOST DO NOT! Precision Industries happens to be one that does have. Our test dyno has the capability to test from 200 ft. lbs. of torque up to 900 ft. lbs. of torque. The other companies use dynamometers that vary from 100 ft. lb. of torque to approximately 300 ft. lb. of torque. There is an old GM printed sheet that has floated around our industry for about 10 years showing the STR of stock GM torque converters that were built back then. Our competitors either use this sheet or are guessing because they have no way of knowing what the STR really is. They also advertise STR’s of 2.7, 2.9, 3.0, 3.2, etc. this is pure BS. All torque converter companies use the impellers, turbines and stators that come in the factory torque converters. In our tests we have never seen an STR over 2.55. Precision Industries do have torque converters with STR over 2.55 but these units have specially machined stators in them and are not worth the high cost for a street/strip application. If our competitors try to tell you differently just ask them to show you a picture of their test machine, not just a printout. The formula for STR is EXACT OUTPUT TORQUE ÷ EXACT INPUT TORQUE = STR. This requires a known power source and a data recovery system. STR is just what the name implies. The ratio of torque multiplication at stall. As soon as the turbine rotates (car moves) the ratio starts dropping rapidly until enough RPM has been reached for the ratio to drop to 1:1. The RPM that the ratio reaches 1:1 varies depending on other factors in and out of the torque converter such as impeller exit angle, stator design, impeller to turbine clearance, input torque (engine), etc. A fact that most everyone overlooks is that a torque converter does not make torque! It takes the torque the engine produces and multiplies it for a very short period of time. This is why some cars perform better than others with the same torque converter.

Some car enthusiasts put all kinds of money in the engine, transmission, torque converter, NOS, rear end gears, etc. then want to cripple the torque converter by lowering the STR to try and prevent wheel spin on take off. This is as foolish as pulling off one of the plug wires. Why don’t they finish the project and work on the rear suspension? Trying to tune your car by using STR is probably not very smart seeing how our competitors don’t have a clue about what STR their converters have, after all the stock torque converter you took out of your car has a STR of 1.9-1.94. The best way to get the right torque converter for your car is to buy it from a company that has a large database of previous sales for your kind of car. Then tell the sales person what mods you have made and what mods you intend to make and let that person help with the decision. The key words here are large database. The “Johnny come lately companies” have no large database or experience with what works with these late vehicles. Why try to reinvent the wheel with your hard earned money when there is bound to be someone in our database that has the same mods as you do and their torque converter/engine combination ROCKS! At Precision Industries we found out 10 years ago that STR is not the most important consideration when deciding on a torque converter it is the whole COMBINATION!

 

Vig 3000, sweeeeet! Trans is still stock except for enhanced shifting. I hope it holds together until I can beef it!

 

I'm in stall #12. Drop by.

RACE ON!!!

 

Transmission Specialties
5600 stall
JW Powerglide w/Pro Tree brake
1.32 - 1.39 60fts, depending on track prep

 

1990 Corvette L98, 700R4 w/2200 stall. Absoloutly awesome! works perfect and a perfect match for my set-up and Mod's!

Thanks,Matt

 

I had a 3200 vig and now have a 2400 stall in my new tranny. The(Vig 3200) was so much more aggressive and still had decent streetability. I dont know the name that came with my new tranny but its not as smooth as the Vig. was.

 

TH400, full manual w/t-brake, 300M input/output, billet drum/pump, upgraded 1st/2nd gear ratios, JW Ultra-Bell.

Neal Chance bolt-together, 8" nitrous converter... 5500 stall on motor, 6500 stall on N2O...
-Jeb

 

I have a 3200 stall Vigilante in my 93 (thanks Bobmic93)...the STR is 2.53 according to Precision Industries...I have a built up 4L60 tranny with a Transgo full race shift kit...to handle the "hit" I replaced the Dana 36 with a 44 and put new 3:73's in it...

My best short time is 1.79 on Nitto DR's...I enjoy the converter and it has amazingly good street manners...I not only drive my car on the street, I drive 1.5 to 2.5 hours each way to the track, depending on where I'm running, and drive home afterwards...

 

1993
4l80e
Pro-Torque 2400 stall

 

4l80E? What motor do you have in there?

 

Yes 4l80e. S/C 383 complete Blower works set up. Cars at Gregs place now for Tune-up and Dyno.

 

What does it take to use a 4l80E with a LT1 and was the added wieght worth it?

 

The added weight means nothing to me because I have a trans that I can put any power I want in the car. After you get tired of putting 2 or 3 trans in the car. The 4l80e and the added weight starts to look real good. The best part is I control the complete operation of the trans. The 4l80e also has a better spead gear ratio then the other trans and you have the overdrive also. For the money I feel you can't go wrong. What do 2 or 3 well built 700r or 4l60's cost. The trans also fits without any cutting.
Regards

 

Intresting. Just expensive for the tranny and the build not to mention the TCI controller.

 

stock trans will out perform a 700r and 4l69 trans approx 1500+ control. I know were a stock 4l80e trans is with approx 10 miles on it. It was use to go in and out at a local high school. and I may be able to get the controler also. for about 2000. Again what a built 700r and 4l60 run.
regards

 

It's not really a option I could entertain at the moment due to my location and availibility. Would be nice though.