Originally Posted by GMC Guy
Then
tell your machinest that when he seats the intake valves,
be sure that the face of the intake valves are even
or below the new surface of the head.

And his reply will be: $$$$$$$$$


As Stuart points out it's all about volume which would make the overbore contribute to compression in the same way. Does anyone know by how much? My .080" over 235 makes 150# on all cylinders and I never touched the head.


1952 1300 Canadian 1/2 ton restomod
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