My 396 is running hot. Upwards to 210-215 at times. Does not boil over. 50/50 anti freeze. Have 4 core Champion radiator w/2 Electic fans 12” off set mounted on shroud. Electric water pump. Heater core not hooked up due to no second out put on water pump. Thinking of drilling holes in shroud opposite corners of the fans to allow air to flow though freely. Any thoughts?