[skyking]

thanks man. It does feel good. I have a louvered grill system on the books, lower and more aero bumper, front dam, and belly pan coming for this rig.
Here is how bad the cooling losses are:
Last night, I came back in 17~23 degree cold. I think my thermostat is stuck. It never got above 145 or so, and the transmission temp was right around 70!!
The transmission fluid circulates through an engine coolant heat exchanger, then out to a radiator and back. In effect, it bypasses the engine coolant thermostat and cools the engine down as well.
I had no cooling fan installed, at all. I left it home.
This rig is designed for worst case high altitude high heat towing over a pass at 20 MPH. The waste cooling air flow is tremendous.
I could have closed off 90% of my air flow last night by my reconing.