The Stovebolt Site Forums The Shop Area The HiPo Shop SBC Breather Function

I wouldn't use the "timed port vacuum" for any of your items. If you have no need for the windshield wipers and only need a location to "park" the vacuum hose then you could go that route. The threaded hole in the manifold, the threaded hole in the rear of the carb, and the large low nipple on the front of the carb are all manifold vacuum along with the small nipple labeled manifold vacuum. The typical factory plumbing would have been: brake booster to the rear carburetor, transmission to the manifold threaded hole, PCV to the front nipple on the carburetor, distributor advance to the manifold vacuum small nipple on the front of the carburetor. I have no experience with vacuum wiper plumbing so in your case I would tee at the manifold threaded port for tranny and wipers. Then all you need is a hose fitting to fit snuggly in the valve cover grommet and a hose from there to the base of the air cleaner.