What kind of radiator is everyone using... I have a 3 row modine in my truck now, It is 2 years old and was working great with my old engine. Now that i have my 350hp--450torgue 383 in my trunk , it runs hot on the highway. I have a new thermostat, rad cap, hoses, and water pump.I also have a 1 year old heavyduty clutch fan and a good shroud on the truck. coolant Flow is good and there is no restrictions of air flow across the radiator. i tried a black magic electric fan ( which i am trying to sell /forums/images/graemlins/whistling.gif) but it was basically the same. Now it can sit a idle all day long and never move over 160. it is only when i take it on the highway. Thats why i feel it is a not enought radaitor problem. I know modine makes a 4 row and ofcoarse there is the million dollar Becool set-up. but do i have any other options?