CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
Sideways might work but I don't see how it would be better.
Oil flow top left to bottom, up, down, up, etc till exit out top right.

View attachment 383250
I hear ya, Wes. That is just what manufacturers have told us. I have not seen one with the fittings oriented like yours, though. Hope you get it straightened out
 
Yeah I can't find another one either, but I believe it was added or changed from oem in the early 80s. Current cooler is being replaced by this.

 
Dam I just found out the fan is puller only. I need a pusher.
I have what looks to be the same type of fan and I can switch my fan around from pusher to puller and vice versa by removing the fan blade itself and switching it around.
 
I will check it out when it arrives.
I tried to cancel the order, but was to late.
I will see if I can find a way to make it work.
 
I hear ya, Wes. That is just what manufacturers have told us. I have not seen one with the fittings oriented like yours, though. Hope you get it straightened out
I have a question about cooling lines and being backwards. I have a th350, non lockup, 1200 stall converter. Trans runs a lot hotter than it should. 210 to 240. Which cooling line is outgoing, and which is coming from the cooler? I have seen both and can't find a decent diagram that says to radiator and from radiator.
 
I have a question about cooling lines and being backwards. I have a th350, non lockup, 1200 stall converter. Trans runs a lot hotter than it should. 210 to 240. Which cooling line is outgoing, and which is coming from the cooler? I have seen both and can't find a decent diagram that says to radiator and from radiator.
160D3682-153F-4E88-873A-864A07B6A15E.png
 
Bottom port from trans is out, top port in.
The lower rad is hot in, and upper is cool out.
 
Last edited:
Bottom from trans is out top in.
The lower rad is hot in and upper is cool out.
Thanks everyone. My radiator and 2nd cooler is plumbed okay, but they are backwards coming from and going to the transmission. I will get this swapped either tonight or tomorrow at work and then report back on temps. THANK YOU
 
Bottom from trans is out top in.
The lower rad is hot in and upper is cool out.
So I was taught to go the opposite. Out of trans to the bottom of the cooler, to push the air up and back to the trans.

I wish that I had some towing with a transmission temp gauge experience to attempt to help. My kid's D-max will run the trans up to 230 on the factory gauge towing up Vail and Eisenhower pulling 13K(?) in 90* heat. Not sure how accurate the reading is, and it only has an 80HP bump in the tune.
 
Sorry. I apparently didn't comprehend properly night. I got it now.
:doah:
 
Last edited:
Thanks everyone. My radiator and 2nd cooler is plumbed okay, but they are backwards coming from and going to the transmission. I will get this swapped either tonight or tomorrow at work and then report back on temps. THANK YOU
Okay, so far, the transmission is running 15 to 20 degrees cooler, all things considered and only thing I changed were the two cooler lines at the transmission. Ambient temp today was only 98. Big diff from 115. Probably shoulda worn a jacket. We will see when it warms back up again next week. MANY THANKS to everyone. Holy crap you have no idea.
 
Hey Wes, could you do me a favor and give us a summary of what you did to help with your heat soak problem? My heat soak problem was tolerable until the other day when the Jimmy completely vapor locked. Granted I was driving it pretty hard uphill on the freeway and it was 108 outside. Thanks
 
Joel, I am pretty sure my heat soak issue was fuel delivery.
I haven't had no power bucking, at highway speeds since I went electric fuel pump.
I have a Holley red label, 9 psi max, Holley fuel pressure regulator, with return to tank.
I kept all the fuel lines away from heat. The reg is on the right inner fender skirt. Feed to carb follows the low side a/c line to carb.
The only mod I made to carb, that might help with vapor lock, is the larger diameter inlet seat.
On the rare occasion I have a hot soak hard start, nothing a extended crank.
I have also gone through my cooling system, but I don't believe that had anything to do with the fuel issue.
 
re. The fan, should be able to switch polarity by swapping wires.
If you can flip the blade, problem solved.
 
Made a trip from la to Havasu yesterday. I left @1 pm ambient temp @ 100.
Last week I removed my grill mounted stacked plate w/ 8" pusher fan. Installed a remote mount Derale 13870, plate and fin cooler, w/ 10" puller fan. Derale claims this cooler to worth 62k BTU.
I was towing an enclosed trailer,
Unweighed. I am guessing @ 3k lb. Truck had a bunch of crap in it too. All together at least at gvwr of 10k, if not a bit over.
all was good sat on line at Costco for gas. Heavy traffic on I10 thanks to construction. I15n start climbing gradually. Trans temps no higher than 180. Get to Glenn Hellen parkway, gets steeper here temp has crept up to 200. Truck by pass and off I15 use the old road, less speed and gentle grade. Get back on I15 for 1 mile temps still above 200. Engine coolant temp @ 190, oil pressure is @60psi. For info trans is not using radiator, and I have an oil cooler.
Use 138 to go back way into Apple Valley, by the time I crest the only real hill trans is up to 230. That was the hotest I saw.
As soon as I get a down hill or level cools down to @ 180 or less.
I stop at my brother's take a nap wait for temps to cool down.
9pm after topping off hit I15n ac on 55mph+ up hill to Barstow trans temps stayed in the 180 range. Hit I40 east, supper bitchen lighting show in front of me. Trans temps are good, ambient is @ mid 80's shut ac off.
Fierce head wind and rain. Wind so bad I was 3/4 throttle going down hill and only able to do 61 mph.
Estimate @ 50 miles in 3rd gear of 218 mile leg.
Now I ask you am I being realistic to want under 200 degree trans temp towing in hot ambient temperature?
During the whole 218 miles run after 9pm only crested 180 degree a couple times. There are 3 decent summits to crest and bunch of little ups and downs.
Almost wish I had never put a temp gauge on the trans, ignorance is bliss
Installed under bed at an angle, hoses on the high end
IMG_20210811_133626.jpg
New
IMG_20210731_191534.jpg
Old cooler
IMG_20210712_135801.jpg
 
Last edited:
I think it’s a little unrealistic to expect under 200 towing in hot ambient temps. It’s been a bit but my last diesel would run 185-195* unloaded depending on ambient temps and traffic. Loaded it would run around 205*. Don’t really worry until it gets to 220*+. At least I don’t.
 
I think that you are golden. I probably told you this before, but I have seen Eaton 18s get over 200* several times. Straight manual transmission with full synthetic oil, and we usually had two coolers on the trucks. Long hills and temperatures over 90* outside would do it. With those, Eaton told us not to worry unless we couldn't keep it consistently under 275*. Maybe the representative was full of it.
So I think that an automatic transmission sees 200 to 210 in those conditions is doing well.
The Allison 4K series in our mixers are over 200* quite a bit. The oil turns yellow after a few years, we service it and put it back to work. No major failures since '06 when they started buying Allisons.
 

Latest Posts

Top Bottom