Rough-idling 360, can't figure it out!

MopaR&D said
Well I spent the past hour and a half messing with the truck. Checked voltage to coil at idle, 12V we're good there. Disconnected and plugged both the PCV and brake booster at the carb/intake, no change. Removed idle mixture screws, blew them out with carb cleaner then reinstalled screws and adjusted idle mixture, again no change. I also (carefully) sprayed carb cleaner around the base of the carb, nothing. One thing I've noticed is it always seems to get worse once the engine is warmed up.

I think the only thing left is the cam which if I do have to replace it isn't going to happen for at least a few months, I need this truck and don't have the time to dive into the engine yet again.

Here's a video of how it runs. I forgot to hook up a vacuum gauge but you can guess what it would be like; I've hooked one up before and it reads normal then drops 3 in-Hg or so and fluctuates quite a bit when it starts "chugging".

OK we are taking in everything you are telling us and we can now see how it runs with the video.

Before going into the cam, I am thinking it is a fuel issue.

Looks to me like it is starving from low fuel pressure at an idle and here is what I am seeing.

Your fuel filter is at a high point of the gas line enroute to the carb. The high point is where all the air in the fuel line collects. If you have ever had a plastic see through fuel filter you will see they are only about 1/2 full of fuel even when pointing up hill.

If you swap in a plastic see through fuel filter for the metal one you have on there now you will probably see that it is air locked being in there on the horizontal.

Now for quick 2nd test, take out the plastic filter and put on a short piece of steel gas line to eliminate the fuel filter all together. I am guessing this is going to eliminate your air lock at idle and it will run better.

Here is my recommended solution, set up your fuel line and fuel filter down by the fuel pump pointing strait up the way mopar did it ftom the factory. Then go up from the fuel filter with s steel line on the front side of the fuel pump to keep it cool and then on up close to the carb, final 6" hook it up to the carb with rubber 5/16" rubber gas line. Just like the photo below. This keeps the excess air out of the fuel filter and sends the gasoline up the line.

Give this a try: