Seed truck??

I'm not quite sure how your motor works? But this 440 ain't going to lose no valves if there ain't no rockers getting any push from the pushrods?
Same words..... LOL
LOL.. And I'm not quite sure how your understanding of a motor works?? But this 360 ain't going to lose no valves over a repaired seat?? Don't know how that valve makes it through the head......

... but I can see busted rockers and shafts coming flying at little kids playing hop-scotch in the neighbor hood... :D