Running hot, need bigger fan and other tricks advice please

[bcrumpley]

A couple thoughts on this. Being that you are in Houston, I’d run 75% water/ 25% coolant along with Water Wetter. I would install a 180 degree thermostat and set my fan to come on around 185. Start cooling it before it’s up to 210 plus.

You say your engine is a 520 cubic inch FE. I don’t know what the bore is, but those cylinder walls must be pretty thin. Nothing you can do to change that, but these changes along with a fan that moves more air and optimal engine tuning might get you where you want to be.

[767Jockey]

Originally Posted by bcrumpley

You say your engine is a 520 cubic inch FE. I don’t know what the bore is, but those cylinder walls must be pretty thin. Nothing you can do to change that, but these changes along with a fan that moves more air and optimal engine tuning might get you where you want to be.

It's a BBM block, the walls are still plenty thick. There's enough meat left for a couple of addition overbores if needed. Thankfully that's not an issue in this problem. I get back home soon and I have a thermostat and a bottle of Water Wetter waiting at home for me to install when I get there. I'll see what if any improvement that makes and go from there.