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Check out the condition of the plugs..might be just be a valve stem seal....just a thought
[/ QUOTE ]Do what Joe suggests. If the heads did not get the good seals (Perfect Circle) etc, the little O ring seals are probably brittle. The valve guides could also be worn if they were not replaced on the rebuild. Not sure I would spend the money or take a chance on an original block to have all 8 cylinders sleeved just to have/retain the original pistons. JMO
