Where doe's the th350 vacuum modulator hook up to a Edelbrock 1406 carb?Currently i have it tee'd off the manifold vacuum line on the carb and the distributor vacuum on the other end running into it on a sbc.The ported vacuum is capped,is that right as the Weiand intake on has no vacuum port.
The vacuum modulator should be connected to full manifold vacuum, either a port tapped into the manifold itself or a vacuum connection on the throttle body ported somewhere below the throttle blades. ***uming a fairly stock engine it should supply something around 15" of vacuum, or more, at idle.
The Jalopy Journal
