smoking 360
This is a big if/maybe but if the rings are put on upside down they leak very bad. Doesn't seem likely. Then again most builders know to hone the cylinders to break the glaze on the walls.
Its either bad rings or that intake gasket or crack intake--very unlikely its crack.
Wounder how Ferris auto school is today, if its even there anymore, lol. Back when I was there the local people would drop their cars off to get worked on by the students. The owners just paid for parts, no labor. Took forever thou