[JEC3039]

On my last couple of engine builds I used the blue paper t'stat housing gasket that comes in a Fel-Pro engine gasket kit, and in both cases coolant wicked through the gasket and left a little pool on the valley cover. Upon removing the housings, the gaskets were soaked solid and literally fell apart in my hands. I don't understand what has changed and/or why Fel-Pro wouldn't use a material that resists self-wicking, but it is what it is I guess. I don't plan to use anymore of those again.

Has anyone found a gasket that doesn't wick and bleed out?

I see Butler has a gasket that looks like the original shape of a GM gasket (I have one NOS gasket of that shape and it is made of a waxy dark brown paper material). I'll call them tomorrow and ask about that one.

Any other recommendations would be welcomed.