[Tigers] the vacuum port on the Holley carb,

[Carmods at aol.com]

_fastsage at cox.net_ (mailto:fastsage at cox.net)  writes: Maybe  because there 
was little vacuum coming from the port on the 
metering  block  Have I made the right decision?

 
Steve, 
I prefer to use the the vacuum port below the butterfly  valve on the Holley 
carburetor.  Some people don't. There is not supposed  to be vacuum at that 
port at idle. This provides a lower advance at idle that  improves idle quality. 
When the butterfly valve began's to open you will  get vacuum to operate the 
distributor advance. If you put a gauge on the  line and drive the car you 
will see the vacuum come in as you open the  throttle.
 
John Logan



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