What is the range of temps for aluminum heads?? Low - Med - Hot? Are temps taken from the head 10-15 degrees hotter? Where do you take your temps from? Whew lot of questions sorry.
^^X2 :yes:The running temp will be the same, the heads will just heat up faster.
They will also cool down faster, water temp should be the same with a t-stat. If your not running a t-stat you might find the temp a little warmer, because the heads will transfer heat better.
From what I have found.
I like my engine temp taken on the intake.