You can eliminate PVC issues check crank case pressure I know on cars the PVC goes into the back of the intake there is a filter under it that does stop up... I think trucks go into the valve cover right rear.
My 77 F350 used oil bad at 20K miles once disassembled the oil rings were worn out I have see the same issues on other 400's with low mileage. I had so much trouble with the original 400 there for awhile I could not keep a crank in it... I had a good bud that ran a engine rebuild shop build me one All was good till the top tank on the rad separated while on the interstate I ran it hotter than ell. From that point on it would burn a qt in 100 miles no smoke maybe a little when you started it but it ran great...
Those like yours were bad to burn holes in pistons #5 I believe and crack/break skirts on pistons... Running a engine hot is like having a stroke it will never be the same...
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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