I'm a friggin' stupid, idiot, moron...

Did that once. For a short period of time I ran a 318 in my car, while my 340 was torn down for upgrades

I had my Duster in the garage (straight water in the radiator, forgot about it) and my grandfather / the boss started complaining to me about how my car was taking up space in the garage. (and yet his stuff can take up space for years, and I can't complain about it)

It had been a bad day before that comment, I jumped in the car, cranked it up, slammed it into reverse and left black streaks on the floor as I peeled outside.

That evening, I was sitting on the couch and I'm thinking "Did I have antifreeze in my engine? S***!" I ran outside and popped the cap off, sure enough it was frozen solid.

Removed the fan belt, started my car up, thawed the block out and took it back into the garage. no plugs popped, no cracks in the block, no damage to anything :prayer:

That engine still runs to this day, it's in my '75 W300 Towtruck now :D