don't discount it sitting with a valve having been open and collecting a lot of condensation or some water down the intake - check what it looks like in the pan before you decide block condition .... if you have any real interest in the engine
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics