Magnum cylinder head crack

R72Demon said

This engine is new to me in a truck that I just purchased and drove home over 200 miles. No signs of smoking or coolant in oil. I started pulling it apart because the RH side manifold had a exhaust leak. Someone has been there before, the manifold is a Dorman replacement and the bolts were not OEM.

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The bolts were likely too long, resulting in the crack. That appears to be one of the bolts for the two middle ports. If that's the case, I don't believe those go into coolant, but only the outside two on each head. So I would probably take a die grinder and clean the crack up a little and let it ride.