It was diagnosed by my local friend who has rebuilt and restored many Packards from the 20s and 30s. But he could be wrong. I need to get it on a lift and work on it. Unfortunately that's my next purchase is a garage with a lift. What can I say I like driving them more then working on them, but I am learning the fun in that also. SO could it be in the rear wheel housing or rear axel gears that I hurt? I was reaving the engine to get her to go and I heard a metal snap. then we just pushed her into the garage.