Wow that engine bay is beautiful! I have never seen a six bladed fan but it sounds interesting. My 216 cooled much better when I had the block tanked during the boring process. These engines weren't known for their exceptional cooling capabilities. I am talking about the pre 1941 216s. The water pump has one hole to push water into the block. One handy thing is the throttle control that you can use to elevate the idling speed to coo; it off a bit.
Last edited by truckernix; 04/20/2023 2:29 AM.