Please get it out of your mind about milling the intake. That is one of the stupidest thing that guys do. Your machine shop should know the formula and the proper way of doing this is cut what you want off the head deck surface them calculate what is needed to remove off the intake face of the HEAD. That way you don’t have mismatched heads and intakes and can change your combo at ease. Many times you don’t even have to worry about the intake face but alignment needs checked. Edelbrock Head quality control sucks now so I would have them checked out too as mentioned above.
