If i put a 74g raptor right below my 320GB seagate am i asking for trouble with heat? They will have a 120mm fan right in front of them. case Antec 900.
As long as the fan is blowing air across them it should not be an issue at all. Personally I would put the raptor on top just in case that fan died it won't cook the seagate
Naw. I got 4 drives right beside each other, with a 120mm behind them
Unless the ambient temp of your room is like 120c you'll be fine.