I also lost a friend who used cinder blocks to support a vehicle to remove a transmission. He had no problem removing the transmission. But as the vehicle sat on the cinder blocks for a week as the transmission was being rebuilt, the cinder blocks became weakened from the static force that was being applied to them. Then as he was reinstalling the transmission, and of course there’s going to be some wiggling and jockying to get the transmission to line up with the engine, this dynamic action caused the cinder blocks to shatter. The vehicle came crashing down and the transmission landed on his chest crushing him. The coroner said he probably lived thru that hell for two minutes before he expired.
Tester