I finally found my problem in my 400. I wasn't getting oil to my rockers because my oil gallery above the rear cam bearing was plugged. I pulled all expansion plugs out and I am now ready to thoroughly clean all oil galleries out. My question is what can I use with my engine brushes "liquid wise" to clean all the galleries? I heard to use detergent. Is this true?
I still have all my bearings in which are still like new. My crank is also still in there. Everything else is off the engine including the plug underneath the rear main cap.