TRANNY COOLER

[damon george]

I had my tranny rebuilt recently for the purpose of towing a heavy load. It has all upgraded heavy duty parts. I notice when I am towing the tranny temp on my autometer guage gets up to about 210-220 degrees. This is in stop and go trafic. When I am Going on the highway at at least 60 mph with less stoping the temp reads about 190. I removed the stock cooler and intalled a bigger aftermarket cooler and still get these temps. any suggestions on how to cool this tranny down. How accurate are autometer guages? The temp probe is instaled in a port in the tranny casing just above the fluid pan. thanks

[7.3Lariat]

Which aftermarket one are you using? Where is it installed? Maybe run 2 in sequence if it is getting that hot?

[damon george]

the cooler is called true cool. it is two times bigger than the stock cooler.

[nismofan240]

im running a flex a lite cooler, mounted right behind the grille so it gets immediate airflow. i usually run about 90 degrees above ambient when driving for a long time. when hauling a trailer it varies on how many hills i have to pull. when i towed a trailer from Alaska to TN the only time the temps got pretty warm was when i was in the mountains goint slow pulling some steep hills. i always pulled over when it hit 230 and let it cool down. If i have issues in the future ill buy a 6.0 cooler and fab some brackets to mount it behind the grille as well.

[7.3Lariat]

Originally Posted by damon george

the cooler is called true cool. it is two times bigger than the stock cooler.

Maybe do like Nismo said and mount a 6.0 in tandem with the one you have now. I don't see how that wouldn't keep things cool.

[BGJ]

Originally Posted by damon george

I had my tranny rebuilt recently for the purpose of towing a heavy load. It has all upgraded heavy duty parts. I notice when I am towing the tranny temp on my autometer guage gets up to about 210-220 degrees. This is in stop and go trafic. When I am Going on the highway at at least 60 mph with less stoping the temp reads about 190. I removed the stock cooler and intalled a bigger aftermarket cooler and still get these temps. any suggestions on how to cool this tranny down. How accurate are autometer guages? The temp probe is instaled in a port in the tranny casing just above the fluid pan. thanks

Some good posts here:
Best Tranny Cooler for 7.3L? (thanks)

[tubular031]

If you get the tranny too hot with a 6.0 cooler you have issues with the trans. Get a 6.0 cooler and that will be plently!

Just to give you an idea, the bottom is the 6.0 cooler and the middle is the tru-cool that most install. I got that one from bob @ dieselsite

[SJB]

Originally Posted by tubular031

If you get the tranny too hot with a 6.0 cooler you have issues with the trans. Get a 6.0 cooler and that will be plently!

Just to give you an idea, the bottom is the 6.0 cooler and the middle is the tru-cool that most install. I got that one from bob @ dieselsite

Thanks for the picture. I've never seen them pictured next to each other before. The 6.0L is definitely a lot bigger, but I guess since you run the stocker and the Tru-Cool in series it helps make up for the smaller size.

[tubular031]

stock + the trucool is still only about half the 6.0.

[nismofan240]

i guess it is the size that counts