Help! I've been having a rough time with the cooling system on my cougar. the engine is a 351c 4v closed chamber. I have taken out the thermostat, had my radiator redone and installed an electric fan(16" dia.) on my car and backed the timing down to 6 deg BTDC and installed #78 jets in the primary metering block of my holley 750. any one experienced with cleveland motors or anyone with some advice please reply. thanks.