Originally Posted by Mr. Potatohead
Do you just have a out of the box t stat or do you add a little bypass help with 3 1/8 holes on the outer edges?



iagree
On my last 440, having coolant bypass around the thermostat knocked highway temps way below what the thermostat was rated @

Originally Posted by DrCharles
Originally Posted by TJP
I will say once again, based on your symptoms, you are either not getting enough air through the core, or the core itself is not efficient enough. twocents beer


I agree, but think it's a combination of both. (Although I did just get done reading a long thread on FABO where a troublesome overheating problem was finally fixed by driving the water pump faster...)

I can definitely tell that the Contour fans and shroud are compromising the airflow... and there's not enough radiator efficiency to make up for it.
Unfortunately there is so little room in the front with a big-block that I would have a hard time finding a better fan that will fit in there, nor will a thicker radiator fit without modifying the core support.

Speaking of which, should I cut out the core support on the sides? work sawzall

I will be looking carefully at the specs for a radiator with two wide tubes (1" will fit but probably not 1.25" tubes).


I've been following your threads closely, as my cooling setup is/was remarkably similar: 440, Milodon 180 degree thermostat, Contour fan setup, and I have a 26" brass C-Body radiator in a 22" core support. While my cooling system works fine, I "feel" it should work better. My car runs around 194 highway to 203 in traffic. When it gets to 203 the fans on low will knock the temp down to 197 or so. I'm just used to it running cooler, but maybe the thermostat is doing exactly what it's supposed to do, set the floor of the engine's operating temp. I just thought it should get down closer to 180 degrees. I did mount the fans with a good amount of standoff, and I do have the water pump somewhat over driven tho

Last edited by metallicareload; 09/14/20 01:39 PM.
440, 4-Speed, 3.54
1968, when Dinosaurs ruled the Earth