I just finished putting in a 347 in my fox, i had left the stock radiator in the car.. It never over heated yet but it go's up to the 3/4 mark and i shut it down to make sure it dont.. I have the fan running at all times its a after marker fan and as of today just got a new 3core radiator.. my water pump is brand new and so is the thermostat (180*). and the car still run's up to the 3/4 mark. any1 have a idea??