Steptoe my trany cooler is mounted behind the rad so I guess that's a good thing.
As DJD says above behind/infront, it still restricts...
I have mine mounted below the raditor and attached to, leaning back to the bottom of the engine.
The fans need shroud to work...look at the fans inside your computer....without shrouds most of the air spills off the end of the blades rather than being directed in the direction needed.
DJD mentions this before moving onto restrictions due to the size of the radiator..I agree...
Even if you use a less restricting radiator with your current setup the chances are you will still have the same problem....sorting the fans 1st has a very good chance of sorting without going to a new raditor.
Your grill size...that may or may not enable enough flow...looks close either way...so sort the fans.
can you duct up from the bottom vents also?
Ok after runing the truck for 30 min the temp only reached 150 this of course is in cold weather at 0C. I didn't change the stat yet so it's still open.
Slip a sheet of newspaper over the grill or front of the raditor, get the temp up then see if it drops....
Is there the possibility of a head gasket failure? -Are exhaust gas bubbles forming at the radiator cap?
Check out the local workshop, get them to run a HC gas test on the raditor...
Further info in other posts....If this is positive, no matter what you do, a leaking head gasket will still run it hot.
A 3/16 hole drilled in the thermostat will give u a high flow thermostat (a Smokey trick)..do not run without a thermostat, u can get into a situation where the water flows thru the raditor to fast to cool...again an issue Smokey addressed yrs ago and an issue I have had to address.
Replacing the thermostat and cap is also worth a try...very common issue.
Have you checked the sender is reading right?
A thermometer in the top of the radiator with give a
reading to the gauge +/- 5* or put in a electic jug with a thermometer and heat up the jug.
These are all low cost/labour issues before getting into bigger fixes.