Thanks again for all the replies. I haven't had time to pull the plugs yet but I will try to answer the questions asked.
Ford FE CJ block bored .030 over. When I drained the
oil I let it run until it turned to
oil. I put the
antifreeze into 2 one gallon containers and it filled one and the other was 90% full. I drained the radiator had very little
antifreeze in it. I checked both levels
oil and
antifreeze before I left the house and they were fine. I was about 5 miles from home when it happened. Oil pressure and water temperature were normal not 3 minutes before this happened.
I sure hope it is the intake because this engine was a replacement for a 427 side oiler 4 years ago which had a cracked cylinder do to a faulty temperature guage and a water pump locking up.
Brent, Bill Littleton has done work on it before and it is going to his shop next week.