Higher Stall add Stress?
As you will hear from almost everyone......heat is about it. As long as you get a good cooler you'll be fine.
To give you an idea...I have had my 4200 stall in the car for the last 50,000 out of 100,000 miles on my trans. Last time out to the strip it shifted perfect. Just keep it cool and it will run for a long time.




Besides the cooler, and shift kit, if your vehicle is not lowered you may want to look into a B&M 3 Qt deeper aluminum trans pan.
SteveC
more torque applied to the input shaft) -and-
the higher stall speed means the engine is also
making more torque at the point of peak torque
multiplication. Double whammy. Check out some
of Yank's dyno curves if you can find them on
their site; some of the more extreme STR ones
make way more torque down low than up top.

