I have a JW 10" 2600 stall converter. non- transbrake I want to have it re-stalled to 4000. to use with a transbrake I"d like to understand what will need to be changed to reach that stall. and wondering how many different combos of stators and turbines are there that would make up a 10", 4000 stall. I've spoken with a few businesses and they either want to sell me a new converter for $900-1200 or are very secretive about re-stalling it. whats the deal? Cheers!
First, I'm not sure what understanding exactly what gets changed inside a converter to alter stall speed would do for you. It's not like you can do it yourself. Second, to avoid confusion, JW converters are different than the converters Jim Weise sells. https://racewithjw.com/product-category/torque-converters/ https://v8buick.com/index.php?threads/tsp-9-5-street-strip-converters-lifetime-warrantee.147066/ https://www.v8buick.com/index.php?threads/updated-torque-converter-program.278923/ Third, I think any converter you would intend to use with a trans brake would need to have the best durability modifications to deal with the added stress and pressures. Chances are the amount of work necessary to re purpose your current converter makes just buying a new one more practical. Call Jim. Maybe he can look at what you have now and suggest something.
You can get a new 9,5" from Jim with you desired stall for 639 if I recall right. I think its around 2-300 for a restall of you own. You need to figure where your powerband is and put stall 300 rpm lower - example if your motor produce around max. torque by 4800 rpm then have it at 4500. Give Jim a call and decide what you wanna do. Converter is a very crucial part for getting the most out of your combo.
I would purchase a new converter with an anti balloon plate and other features to handle the power and trans brake launches. It was a little spendy however they did a custom spec for me and it allows a 5000 stall T brake launch and still good on the street with low slip. I’ve since shelved it to use my 2004R however I would recommend this converter for sure! https://www.summitracing.com/parts/ati-408700
