Re: Tricks to sealing the intake Cheap wize!!
You are correct about some of the slots being machined too deep. I've seen this on several NT style carburetors. When this happens you have a built in vacuum leak. I always fill those slots with sealant making sure they are completely filled front to back.
Another helpful hint is to sand, or rough up the intake manifold where the carb will attach. The older aluminum manifolds weren't bad but the chrome plated steel ones need to be roughed up some to give whatever sealer you use a better 'bite'.
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