just put -another- new water pump on it yesterday, that's what prompted me to post this.

Rad cap has been changed twice.

here's a pic for the guy wondering about a winch up front:



it's an A/C delete truck with nothing in front of the radiator.

The fan is working great, holds a piece of paper against the rad just fine. And if you reach towards the carb or something while it is running you can feel the air rushing over the area from the fan.

The idea about disconnecting the trans cooling lines is a good one.... I had thought of that a year ago and forgot about it. I was thinking the same thing, eliminate the possibility of the trans fluid heating up the coolant in the exchanger. I'll try that too, thanks for the reminder.

I guess some of you are on to something with cleaning the inside of the block. I have been discounting that since the coolant stays so clean but if there is a LOT of gunk really impacted in there I suppose it is possible that it just stays put. Gonna suck removing the headers and the motor mounts to get to all the freeze plugs so I can get a pressure washer in there... running out of ideas I guess.