I think the fact that I have aluminum heads, and stainless steel headers might keep the motor cooler than normal.
I would assume any modern motor over 500 ponies would have aluminum heads anyway. The SS headers keep the motor cool, but the engine compartment is hotter than my old SPF.
My water temp is 190 f, with the fans kicking on at 200 f.
Oil temp is almost too cool at 158 - 170 "most of the time". However if I run it hard for 15 minutes,
oil temps shoot up to 210 f max, but quickly cools off (no
oil cooler hooked up at this time).
I don't think heat is much of a problem at lower compression (10:1 or so). I would think the boosted engine would have more of a chance of heat trouble, but he is doing fine too.
Eric