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Old 07-28-2016, 06:05 PM   #131
TJ's Chevy
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Join Date: Mar 2013
Location: Southern Oregon
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Re: Newbie thinking about diving into a '65 GMC 1000

Quote:
Originally Posted by Praxiss454 View Post
Okay I think I figured out the manifold vacuum part from my shop manual. I believe I am supposed to unhook the line from the PCV on the top of my valve cover which goes to a port directly underneath the carb on the intake manifold. That must be the place I hook up the vacuum gauge to rather than the venturi vacuum port on the carb that goes to the distributor advance.

TJ's Chevy - thanks for describing the baseline mixture I should start with, that was another question I had.
Correct, you hook the gauge to the pcv port on the carb. With the way I described you actually don't Need to use a gauge, but it will aid in adjustments.
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