452 heads cc's

MOPARMAGA said
.0055 is roughly 1 cc.
It might be faster on a broach but I surface iron and aluminum heads daily and it's quite a bit of time to get .022 off of a head and that only will decrease your chamber size by 4cc's
In reality the heads are likely to clean up at less than .010 so you'd be looking flat heads but not much less volume of a chamber.
Also for every .0055 your intake should be cut .011 to keep you bolt holes aligned.
I recently did my trickflow heads, I milled off .080 and to get my intake to sit down I had to mill .140 to get it close. I have adjustable rockers so I didn't need new pushrods.
To bad you don't live closer

I'm putting together a 400 with KB240 pistons, stock rods, 383 steel crank and when I cc'd the heads on the 4 corners and they came in at 87.6 and 88 on one head and 87.6 and 89 on the other. I need to cut them to make them straight but wanted to know what amount of cut will equal cc volume. I thank you very much for your explanation it's awesome. Basically it will be a 9.25 comp 400 for fun driving in my 79 Magnum, I use my 73 Blue Duster for track use