400 BB build issues

Holy **** man--I finally saw the video--no wonder you had an "explosion"... You have no turning water pump no fan no shroud...dude, quit torturing that poor 400--what did it ever do to you? What you're experiencing there with the "explosions" are due to VERY HOT cylinders and heads trying to dissipate the heat heat because there's no water flowing past them and when water does touch them, it steams up instantly and the expansion looks for the first easy path out--the water neck on the radiator...just stop...stop what you're doing and get a friggin belt on that thing with a fan and a shroud and a 180 stat just like RRR said.