[Tigers] And Finally, One More Question!

[Steve Sage]

I've had the vacuum line from my vacuum advance distributor running from 
the distributor to what is officially supposed to be the vacuum port on 
my Holley carb, the port on the metering block. When I pulled the vacuum 
line off today, there was no difference in engine RPMs. I put a cap on 
that port and re-installed the line on one of the two vacuum ports on 
the base of the carb. When I pulled the cap off that port, RPMs raised 
considerably (a lot more vacuum?). I've been suspicious that my change 
to a vacuum advance distributor didn't make a gas mileage difference. 
Maybe because there was little vacuum coming from the port on the 
metering block  Have I made the right decision?

Steve Sage




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