Engine of barn find-steps to evaluate/save

In My 36+ year career pro-wrenching, I've seen multiple dozens of broken rods that didn't go through the block, and they'll do exactly this...they lay against the block left bank or rear bank, rotating CW the throw pushes it out of the way & it clinks when it falls back once clear, but turn it CCW & the throw pins it to the block & stops dead...every time....in the same spot.
See post #17