Reply to "Keep the Iron?"

The seats don't look terrible from here but the valves are toast.

You should look at the flow numbers that Dan Jones did on the original closed chambered iron heads. They flow quite well with numbers very much like the current batch of aluminum heads.

You just don't take a die grinder to them and expect them to flow but they take little work in the pockets and a professional 3 angle precision valve job and they are surprising.

In Pro-stock days, with racers like Dyno Don Nicholson, those heads were supporting something like 800 hp on a 357 inch displacement. On the stock iron crank and stock 4 bolt block.

Sure there were trick factory aluminum heads and blocks but those were for match races.

A lot of the game of the current aluminum heads is glitz. An iron head engine can make 500hp naturally aspirated on the street and is drivable.

Read the flow numbers. You need a lot of lift. That translates into a lot of cam. If you are not willing to put up with the drawbacks of that, then you are wasting your money on the heads.

The heads, regardless of who makes them now and how much you pay for them will not make a 351 pull like a 427.