The Stovebolt Site Forums The Parking Lot Big Bolts 51 GMC 270 engine trouble

I dropped the oil pan and turned the flywheel by hand but it's still got a stopping point. I couldn't see anything from underneath that just looked crazy bad or bent up. All the piston rods seem to be ok but I'm no expert and don't know everything to look for. There was zero metal shavings or junk in the oil or pan, just for what that's worth. What's next for me to do ya think, pull the head off?

Thanks, Troy