Depends on how much more camshaft you out into it. Here’s the thing, head vs head the numbers favor the aluminum head. On low lifts, it’s not a huge deal, but yes there’s power to be made, not much. Add duration to any head and the power goes up. Back to the head itself, the aluminum will start making more since the flow rate is higher, but again, unless there is a not meaningful amount of duration added, the gain is low but still expanding at a greater distance on the dyno read out. Add more lift to get into the higher flow rates where the flow differences really start to show and then the power divide really starts to increase.
