Also, Uffe - EGT isn't dependent solely on rpm - loading raises EGT's as the engine makes more BTU as required to move the load and keep it moving - generally:

Idle - 275*F
(Idle loading increases when transmission is in any gear-range - more aggressive torque convertor (lower stall) = higher loading = necessity of add-on cooling - on the other hand, lower stall reduces operating temps because of lower slippage when not in lockup)

30mph - 350-400*F

50mph - 450-500*F

70mph Cruise - 550-650*F

70mph cruise, 5000lbs trailer with heavy wind resistance - 750-900*F, depending on head-wind and terrain - 1150-1200*F pulling that load up a hill (which is where I back off, btw)