Could be! Definitely a lot of moisture around here, they where pretty rusted. Before I started pulling them I read in a thread that you can just twist them out with needle nose pliers lol. I felt like I needed the jaws of life on a couple of them.
Yep. It seems random even on the same engine. Buddy's Aspen got a 360 Magnum motor from a van, and had the shields on one side pop right out (didn't even need pliers on two); the other side was an hour of pulling, prying, and swearing. (In hindsight, it would have been much easier BEFORE pulling the heads.)
