My latest version of my 502 has zero vacuum ports available. There aren't any on the manifold or carb so I bought an electric vac pump. Should I put a puke jug between the PCV valve and the pump to keep oil out or would putting a double loop in the line do the job? Since I have no vac sources, will the pump running all the time while the engine is on matter? It uses a vacuum detection system to turn on so I guess I'll have to put it on a switch to control it.

Let me say first that I've never had nor used a vacuum pump, so my intention is not to come across as any expert on this. But several years ago, I had considered using one on a car I used to have, a so I telephoned Moroso concerning one that they sell, and the guy over there told me that it isn't good to use a vacuuum pump an cars that will see a lot of street mileage, because the pumps need to be cleaned often. I'm simply repeating to you what I was told by the Moroso tech guy, so take it FWIW.

It sounds to me like the type of vacuum pump you purchased is for running power brakes, not an evacuation vacuum pump.
You either need to create a vacuum port, eg. drill and tap one, or put a carb spacer in with one, or run breathers and no pcv.
Unless you are using low tension rings, big boost, or lots of NOS,... creating a lot of crankcase pressure, you should not need or use a vacuum pump on the engine.

I would drill and tap a port in the intake manifold. If thats too scarey , do you have room for a spacer plate under your carb? You drill and tap a port in the spacer plate. Those vacuum pumps vibrate throughout the car , I don't like them.

Dave