Guys, I have had my 1970 SS numbers matching camaro sitting in my garage for around 20 years. Just real busy with work and always going to work on it later. Anyways I always try to start her up once a month or so. We about a year or two ago I tried to start it and it would not turn over. I always had trouble turning this car over since I bought it, sometimes in a parking lot I would have to wait for it to cool down before it would turn over. I tried to charge up the battery real good and leave it on 40A while turning it over. I heard the started bounce off the ring gear. I thought well it is locked now. A month ago I pulled out the engine. it will turn with a long breaker bar but it is not easy. No crunching sounds. Took out spark plugs, same thing. Took off the heads. No issues in any of the cyl. boars. Clean as it gets. so I bolted the heads back on and took off the crank caps. No real issues on bearings. look warn out but nothing like a spun bearing. With the heads off it was still pretty tough to turn. I would think it would turn easy with just the valve train. Next I took off the timing chain. it now spins. so did I throw a cam bearing? Never heard of that. I am going to take it in to be rebuilt in the next couple weeks. Just wanted to get thoughts on this situation.