Getting hot on the highway with the AC on.

it will have more issues, the thermostat restriction is used to help build more pressure in the block to prevent hotspots.

I tried that on a pretty hot 406 sbc , it didnt work , built restrictors to slow it down , eventually wound up w/ a 5/8 hole in the restrictor that worked great!
Proving to me , that water can be circulated too fast !! ( a mech. friend told me that I would wind up w/ a 5/8'' hole before I tried all of them !
--