Tranny Temps?

[Big Blue Stroker]

What is the limit to go on a tranny gauge before running to hot?

[Copperhead]

An E4OD or 4R100 needs to be a min of 125deg to work right and for the converter to lock/unlock properly. It is considered HOT around 190. If it regularly gets above 200 you need to look for a problem, but the occasional spike to 200 -210 isn't too bad. It'll run hotter if the converter is not locked or in traffic. Of course it'll run the coolest on the highway.

A good tranny cooler should knock about 20 degrees off your hottest reading,..... give or take. In general, the cooler the better, just as long as you get the 125.

[Dirk]

A good trans cooler will keep the temps 60-65* above highest ambient temps under heavy load.

[Ryan Rønning]

Good to know!

[Raul@Stealth Automotive]

try and keep it under 200... when i installed my 6.0L trans cooler it dropped it 60 degrees

[symbols]

Any temp is good. See pic below

[SuperCrutyPS]

This might be helpful:
Transmission Heat Chart

I, too, put in a 6.0L tranny cooler - Much better!!!!

[IHwelk49]

I run dual tranny coolers and have never seen anything above 150