Hard enough to spin a rod bearing at Charlotte. It's sitting for a few months, waiting for another round of build-ups. I'm trying to convince him to let fix it because ALL it needs is a turned crank and an oversized bearing, but he insists on getting an aluminum short block from Poland instead? I think he's crazy. He really doesn't need it. The bores are going to be fine, he just needs some machine work on the crank. He doesn't trust ME doing the work. Hmmmm. OK. More like, I don't know if I want the liability... But I HEARD it, and can already tell what's wrong. I've always thought these things needed more valve cover breathers.