Originally Posted by K and K
On 57' Caddy I just picked up with its original 365 motor, I noticed the intake manifold has only one vacuum port and it has a very old looking plug in it which sits just in front of the carb flange right under the pcv inlet of the edlebrock performer carb the previous owner put on. The original power booster has an ancient looking vacuum hose hanging from it but I can not find a port matching its length.
Maybe you can find a spacer plate for the carb that has a spot in the back for the vacuum fiitng, or go back to a rochester carb and put one in there. The edelbrock doesnt have a plug in the back of the base plate you can put a fitting in????