I was using my boom to hold up a v6 Chevy engine while I put the engine stand on it. The 8N wouldn't hold the engine up unless the pump was running. I had it in neutral with 6x6 blocks in front of the rear tires. Somehow the shifter went into 1st. Gear and it hopped over the blocks and headed down the hill with a 30 foot gully at the bottom. I took off after it and when I caught up with it sanity returned. It was moving pretty fast and I didn't see how I could get on without getting run over. Anyway it hit a bump and turned into a tree which stopped it with authority. The bolts holding the engine to the chain sheared but no damage to the engine except some dirt. It bent the left radius rod and the original grill guard pretty good. I still don't know how it got into gear.