Below is the diagram of the five miles of vacuum hose the 267 uses.
The EFE is the line you want to follow which runs from the valve to a temp activated switch on the thermostat housing, into a check valve then a tee if you have the air injection pump. if not then the vacuum hose runs from the check valve to a port at the rear right side of the carb.
This is basically the same diagram on the emissions decal minus the air pump on my 79 Monte Carlo with the 267.
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