[CST10]

Thanks for all the replies so far.

As I said, the torture test was about 1 hour in drive with AC blow wide open idling in the sun with the hood down except to verify the gauge readings. Outside temp was about 94 degrees.

I did second verify the temperature at several location on the engine and radiator using an accurate temp laser gun...........readings were with 3 degrees of each other. Engine temp sending unit is located in the front drivers side on the top of the intake manifold by the thermostat housing.

The fans have a shroud that covers 95% of the available core surface area. Fans blow so hard you can feel the air movement coming from under the truck by the doors.

With the AC off, it runs 200-205 degrees in the same conditions now since summer has arrived. On the road at 55 MPH the temp will drop to about 200 degrees then climb back up after you are idling for awhile at a stop.

I am using 50/50 anti-freeze/water mixture with a 15 lb cap. All of the air is out of the system also.

Should I add an additional pusher fan to the condenser unit? Would that help any? Should I look into an aluminum radiator to replace the new 4 core copper radiator? Should I leave as is and not change anything els?

Really at a loss of which direction to go forward with.