Re: 292 Questions
The hole in the manifold is tapped, right? Probably not a vacuum leak. Geezer#99 pointed out that the one open vacuum port is probably for your air cleaner. If you don't have that flapper on the snout, just plug that nipple.
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~Steven
'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper
Simi Valley, CA
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