Hi guys I have a 69 Mustang FB with a 630 flywheel HP 428 .040 over, Edelbrock heads, .700 solid, roller, Scat forged crank, aluminum flywheel, Hooker 1 3/4 coated headers, 3" Magnaflow exhaust, Edelbrock aluminum water pump, Edwlbrock Victor, Champion 4 row radiator, Focus electric fans. I have a 160 stat, The car stays at 180 idleing all day if the temp is above 80 degrees outside. As soon as the motor goes above 2000 rpm the temp rises as high as 210 going 70 mph in overdrive. Let it idle and it eventually cools off. I realize Champion is not the best radiator but it gets rid of the heat when the engine is turning slow. The Focus fans aren't the the best either but at 70 mph in overdrive turning 2200 should be enough air without fans. I put in an 180 stat figuring the water doesn't have enough time to cool off but didn't help. No thermostat the same thing. The only thing I can figure is with the big cam and lots of overlap doesn't make horsepower till 2000 rpm. I even bought one of those aluminum pieces that covers the top of the grill to force air thru the radiator. I would buy a 1100 dollar Griffen if I knew it would solve the problem. Suggestions please.