73 Duster build named Fred

diymirage said
when i had my 408 build i simply didnt want to spend the money on aluminum heads
with the stock iron heads (a little ported, a little blended and 2.02 valves) im making 420 hp and 470 lbs of torque

now, you and i both know the heads are what are keeping me from breaking 500 pounds (probably heads and cam to break 500 hp) but if i wanted to spend the money on a set of aluminum heads, i could do it with the engine in the car, and do it in an afternoon in my driveway

so that is just one reason for starting out a 408 with stock heads

I don’t disagree with you, but I’d bet in todays world you’d have a hard time finding anyone that wants to grind on factory cast heads, and put the money in to seat and guide work only to be more than halfway ($$$$ wise) to a set of aluminum heads. Also 420hp and 470lb/ft says to me your engine wants much more head than it has to rpm and make the power it should be making. It seems to me through this thread we’ve discovered the OPs goals and in my opinion he’s past what a stock head will do.