.050 mill safe for heads with ....
#5
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With -2cc reliefs I had .212 with that cam on the intake side and .035 milled. Taking the .165 away from my flycutting-leaves.047 and your additional mill of .015 is .032 of clearance....I wouldn't run that cam without 3 times that. Flycutting .065 is the minimum and you better check the clearance again. The powerband of that cam is to 6700-6800. At those speeds thing strettttch. There is also valve float which is an issue for XER lobes with insufficient springs.