Correct not a magnum, a LA roller.
The over heating (Boiling over) is after I pull the truck out of the barn and let it idle.

I forgot to mention that this is a Shelby Dakota, it has two 11" electric pusher fans. They both work as should.

Timing is controlled by the computer. The distributor(thing) is set with an initial timing of 10 degrees.

The few times I have driven it the temp would creep up when at a stop.