vacuum advance

[Hillbilly Deluxe]

I am looking for the proper location of the vacuum advance wiring.

From the distributor to the carb?

But not sure where,can someone please help me out...

Thanks

[Longbox55]

The vacuum line is usually plumbed to the base of the carburetor, though this can vary depending on what engine and carb is run. Some vehicles do make use of the vacuum distribution manifold to split the lines for multiple uses, and in most of those cases, it is also temperature operated as well. Best bet to be accurate would be to consult a shop manual for the particular vehicle you're replicating. You might be able to find an online access manual, especially if it is an older vehicle.

[ChrisPflug]

Depends on if you're working on aftermarket or a factory smog motor setup

Aftermarket Holleys will have the line coming from the side of the metering block between the float bowl and body- Carters at the front from the baseplate casting. Vacuum advance usually uses ported vacuum taken from above the throttle plates so the fitting will be a little higher on the carb than one supplying manifold vacuum (like a PCV line) at the very base of the carb. Later emission controls often have the advance line plumbed through other devices such as temperature operated valves on the intake water passages as such that delay or contol when the vacuum is applied. Mid 70's Fords are the worst for truly bizzare emissions controls that didn't seem to do a whole lot but make the car run terrible, break down a lot, and choke whatever power had originally been available (the 194 horsepower 460 in the '75 or so Mark IV comes to mind- dual vacuum advances that seemed to work in opposite directions)