I have been doing some additional research on the valley end wall gaps that have been found on my engine build using the CHI 4V heads.
Today I received the following email direct from CHI in Australia, which fails to support the previous explanation from George.
But this explanation and suggested solution of machining the intake fails to address the fact that all of the intake bolts were perfectly aligned with the cylinder heads.
Mystery continues.
Thought this information should be made available to others.
Larry
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