Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: 62 Ford Galaxie Fuel Consumption
The power valve opens up when you are accelerating, it's held closed by vacuum. If you have a vacuum leak or it fails (generally fails open), you'll burn rich. I believe you should have about a 20 gallon tank and depending on the gearing, you should be around 12 miles to the gallon.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?