The 392 had a taller deck also. On the 392 heads, they extended the length of the intake ports and angled them down, so the low deck 331-354 intakes would still fit. And like Cabs says, keep it from getting too tall.
To run 331 - 354 heads on a 392 block, you need spacers between the intake and the heads. The Hot Heads do not need a spacer, it is designed in to fit a 392.