Engine milling maths

Graham is doing my intake. Here is pics with no end rail gaskets. I had to push it down pretty good to get the bolts in. The heads were milled .031 after these pics. Not sure what the spec is for milling the intake. He would not do the head intake face. He dissidents that’s the wrong way to do it. Kim

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So are you saying he won’t mill the heads to make the intake fit, or he won’t mill the face of the intake manifold?

I’m just trying to be clear which way he does it.

TIA