thanks for the pics. they were helpful.
i did get a reply from deve which was very helpful and informative. i thought i'd just paste it here for anyone who may be asking the same questions
Doob... the cool thing about this hobby is the different configurations that are possible. I had no idea the Zenith Carbs have no vacuum port. I didnt know ANY carb of this vintage was without a vac port. That being said, Air goes in the throat of the carb, due to the Venturi effect, suction happens and off you go. I do not THINK (someone please correct me if I am wrong) it makes any difference if it comes from the upper intake(Carb) or the lower intake (Vac NPT port on the intake manifold). So, I would run the Distributors Vac Advance AND the PCV from the intake manifolds port. FYI, out of the STOCK 20 inches of mercury available in vacuum, the PCV takes only 2 using the V-237. That is really an insignificant number and should be no problem.
All that being said, I am not a fan of dual carbs and dual exhaust because it has been proven over and over that they do not give you even ONE horsepower more performance due to the way the stock 235/261 Heads are designed. Until someone makes a performance Head, its all show and ZERO go. Just being honest. I dislike them from the perspective that they cause you to have to change the way your shifter works, the way you add oil filter kits, and the way you deal with trailer hitches and other under the vehicle items. BUT, we deal with it because people LIKE them. I did not want to be the first person to respond, was hoping a real expert would chime in first, but wait a few days and hopefully someone like Dave will respond. Hope this helps, but wait for someone who really knows!
thanks again to all who replied.
