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Hi, I'm looking for help routing and connecting the underwood vacuum lines on my 1969 Vista Cruiser. It has a 350 motor, stock intake, Rochester carb, A/C, power brakes, TH400 transmission.
In particular - I don't know where to plumb the vacuum reservoir to connect it to manifold vacuum. The car came with the plastic reservoir, but no vacuum line attached. The factory service manual is very light on details about where vacuum lines actually route and plug in.
Currently, I can't see any unused fittings to connect the reservoir. Is there a specific location that a plastic or brass T-Fitting was installed? As it is, the transmission, brake booster, and air cleaner are occupying all the vacuum ports I can find.
Thanks for any advice and a photo would be much appreciated!
This is a picture of a 1970 Olds 350-4bbl intake manifold but I suspect the 1969 is very similar.
The AC vacuum reservoir should connect to one of the ports on the runner behind the carburetor flange, near the brake booster vacuum port.
The vacuum reservoir only needs to be connected to full manifold vacuum. Any port that is tapped directly into an intake runner is full manifold vacuum. If this is a two-port reservoir, one port has a check valve, one doesn't. The one with the check valve connects to manifold vacuum.
February 5th, 2023, 08:57 PM
