Where is the best place to install the vaccuum on a power booster, back of the carb or on the intake manifold. Does one have more vaccuum than the other or are they the same. I have either place. I just want to put it in the best spot. Thanks.
GM generally put it on the big port on the back of the carb, but if you've got a PCV valve going there, then just going to the manifold where GM put the heater and trans vacuum modulator lines will work fine.
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