Does anyone know what the flow rate of the water pumps is on these trucks, or where I might be able to look for the information?

 

I know the 6L engine in my jet boat is around 45 gpm at 3600 rpm with the t-stat open. There is a reason engines use such big hoses going to/from the radiators. I don't know what it is for our engines but it must be a bunch if the system can keep its cool towing up a steep grade at full throttle in 110+ weather...................that's a bunch of heat to get rid of and not much differential temperature to work with.

 

I wonder this as well, after a hour on the road my rad cap is ice cold but the oil is so burning hot i cannot even drain it until i let the truck sit for a few hours... way hotter than any of my newer gasser engines