Posted February 17, 201213 yr comment_381070 I have a N42 head which is undergoing basic valve work, the head was warped and will be milled on bottom and top to a total of (not positive yet) of around 20 to 25 thousandths. If I use 1 shim of 15 thousandths per tower will that be sufficient to maintain cam geometry? Or should I have it milled to a total of 30 and use 2 shims per tower? Thanx. Link to comment https://www.classiczcars.com/forums/topic/42311-cam-question/ Share on other sites More sharing options...
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