milling my 906's heads .080

There was a formula that was used many years ago to determine the amount of material that was needed to mill the intake port face of the heads. The thing is, when you mill the heads, the ports get closer to the deck and you are in effect , making the heads closer together. This makes the manifold sit UP and in all liklihood, NOT line up with the bolt holes or ports. The trick was to mill the heads at both the deck AND the intake face so that ANY intake could be used on the engine. Some guys only mill the deck side of the heads. The problem with that is that now you have to mill any and every intake you want to use on the engine.
The first 440 that I built in 2002 was a low mile 1978 cast crank mill from an Imperial. I had the cylinders honed and reused the stock pistons with new rings, bearings and gaskets. I did like I mentioned: had the block decked .010, milled the heads at the deck and intake face and slipped in a 280/474 cam. The intake bolted up like stock and the car ran great.