Well he said the deck was milled, which would have the same affect. So either pull the heads and mill them to the right angle, or do the intake (then that intake is useless to anyone else down the road if you want to sell)
I can see that you've never done machine work, as there's a big difference between angle milling and flat milling and the correction on the intake side of the heads.
joes68340s
Measure the gap that you have at the bottom of the intake without the gaskets in place with a feeler gauage and when the heads come off you will have to have this much removed from the top side of the heads where the intake manifold butts up, and this will correct your problem and not destroy the manifolds. The intake should lay flat on the heads without the gaskets when finished, sounds like you'll have to take about .015-.020 off at a angle, so the bottom of the head where it meets the deck of the block will be 0 and the top will be the difference of the gap at the bottom, whatever the measurement is. So that the top will be cut and the bottom will just clean when finished.
