Years ago I bought an engi9ne stand rated at 1250 lbs. Had a picture of an RB with B1 heads on the box, so I figured it'd be good for my B motor. Fully dressed I could hear that stand groan (lol). I would hook my engine hoist up if I left it overnight, just to be safe. Never had an issue though and it's been 20 ears or so, I still have that stand.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.