You need to go back to the 80s to see when power really peaked. There were 1.5L engines in the mid 80s that produced in excess of 1,500HP in race trim. There is one on display at the BMW factory in SC that overran the dyno in qualifying trim. It's a tiny little thing surrounded by two giant turbos and intercoolers.
Of course you're right about this.. the turbocharged era produced incredible engine output. I worded my comment poorly.. I meant to convey that the power output of the 3.0L V10 format peaked in the mid-2000s.
