Best thing to do after an engine has been sitting up a long time is pull the distributer and prime to oiling system. I hope it's not a cam bearing issue.
I had a faint whining noise once in one of my 440's that started never really seemed to effect anything. The one day it started running rough like it was on 6 cylinders. I had to drive it the 20 or so mile home. It was on 6 cylinders, spun a cam bearing & broke the cam shaft on the #4 journal. Cylinders #7 & #8 were not moving. The front 1-6 still ran fine & got me home. LOL. Cut the oil filter open & was filled of bearing material. I had to rebuild it & still going strong today.
