i just got my truck back with the 4L80e and a 3000 stall put in it. I did the stall twice in a row, how hot should it be? I called the place that installed it and they said that the converter heats up alot. It reached ~235 and then i parked it and let it cool down. Still runs fine but i got worried.



....boy does it shift hard! < thats my 3 gear scratch! haha

 

Got a tranny cooler on it? Or look into a deep aluminum tranny pan, both will help with the heating issues, Im not too sure on how hot is too hot, but with transmissions better safe than sorry.

 

150-180 is pretty ideal, 210 is ok but not great, I think you will run into problems with it at 235. Definitely time for an aftermarket cooler.

 

My temps depending on how hot it is outside.right now day time is 80-100 deg.
freeway speeds 140-165 depending if i'm on it or not
city 140-175 stop and go
track 150-190 depending if i'm hot lapping normaly 170 after a burn out and pass.i turn of e-fans before my pass
never seen it go above 190 no matter what i do
4l80e and hughes 3000 10.5" that is loose and flashes at 3800
i'm runnin a b&m trans cooler#70266 and a mag-hytec deep trans cover
235 is not good i freek out when i see 190 at the track
heres some info on temp to trans life from mag-hytec
175 deg. 100,000 miles
195 50,000
215 25,000
235 12,500
255 6,250
275 3,000
295 1,500
315 750
hope some of this feedback and info is usefull to you.