[hatzie]

Originally Posted by Gregski

folks, sometimes you have to walk away from the problem to have that Eureka moment

so I got to thinkin', why does my truck overheat now when it didn't overheat before this project, I mean I know the heads are different, I know the intake manifold is different, but what else

hmmm, remember we used to run the heater core and now we don't?

Well, we are blocking off the port on the intake manifold and we are blocking off the port on the water pump, what if we STOP blocking them off and run a bypass hose as a happy compromise?

and so we did just that

Note: we had to run the hose 5 foot high to prevent it from kinking, hey its a temporary solution to test a hypothesis, the zip ties don't hurt either

I would put the temp sender in the intake manifold not the water neck. If the thermostat doesn't open you could overheat before you get a trouble indication.
The threaded hole you plugged directly under the radiator hose on the LH front side of the intake is a good location or you could drill and tap the unthreaded boss next to the heater hose.