90 over 318 Head Gasket info needed !!

Garys72Duster said

Is .090" over on a 318 even doable? Just curious, as I have only done big blocks. We usually go .020, .040 or at the most .060, but 60 is pushin it! How much overbore will a 318 take? Is 90 the max? Thanks.

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I've bored a 1971 La .130 over to 4.040.
It's only .065 material removed. The bores are .250 in some cases on the early stuff...

To the reader, I do not promise or guarantee that your 318 block will safely bore to 4.040.