Just reposting this as some were having difficulty finding the old link,

Drilled and tapped to suit 1/4 NPT valve AC Part number CV726C

Apparently standard on a 1968 C*** Camaro

I have run a hose from here into the rear of the manfold vacuum fitting which is facing rearward straight out and down to the PCV.

1957 ________________ Ford

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Y Blocks, The New Flathead!