I made the remark about cracks in Ford flathead V8s because I distinctly remember a past experience. I picked up a nice 53 Ford, flathead 8 with lots of cracks and a Fordomatic in need of a rebuild. So, off to Dad's salvage to find parts to fix, stick shift stuff, ( no fun at all the pull all those pieces from the auto and stick car and reinstall in the survivor), then the search for a block. No impact wrench then, just breaker bar, sockets and ratchet. 24 bolts per side, 48 per engine and a total of 24 blocks before finding one not cracked between valve seats or seat to cylinder wall. And that one had a scar from a slipped wrist pin that had to be sleeved. Made a really slick old
Ford, but I'll never forget removing 1152 bolts in one day!