Rich, if you dont mind I am going to throw in my two cents.
I should also mention that the car is burning oil pretty good. About every 50 - 70 miles... a quart is gone however, I am not experiencing any smoke out of the tailpipes.
As pointed out, there is a difference between using oil and losing oil. If your car was burning oil with that much consumption you would definately notice some blue smoke, but more over the spark plugs would be fouling relentlessly. By listening to the video, I didnt notice any thing that sounded like a dead miss to me which would indicate a fouled plug. Now this not to say you dont have a fouled plug, but I would pull them and check all of them. There are many web links that show how to judge your spark plugs by looking at them as to wether they are fouled or not. Just google one.
Now if the car is losing oil that is a different story. Blown seals can be caused by many things, worse case being bad compression rings. Worn compression rings will cause to much "blowby" in the crank case which will eventually blow engine seals. Thus the need for a leak down test as suggested. It should however be pretty obvious by puddles of oil left in the drive way after driving the car if you have a front or rear main leaking. If its leaking around the valve covers, you will normally have smoke coming off the exhaust manifolds after you shut down the engine, and plus you can usually smell oil when it burns off the exhaust.
Now lets talk about power. There are several things that can cause an engine to feel like its losing power. The most common mistake made when changing engine cams is that people tend to "overcam" an engine. This means they select a cam that is not best suited for the type of driving they intend to do. If the cam is to "large" for the engine you may have a feeling of having less power such as you described. Now, Im not trying to burst your bubble, just pointing out facts, so please dont be offended.
When selecting a cam there are several engine factors to consider.
1. Carburation, cfm, type of carb, jetting to start out with. Personally in my opinion, I would get rid of the eldebrock carb. Every person I have talked to have never been pleased with them.
2. Intake, what size intake vs intake plenum size or length. Simply put cams respond differently to the type of intake being used. If you are running a stock intake, then certain cams sizes will respond differently. Most after market intakes are best matched with certain size cams. If I remember correctly you installed a different cam with the aftermarket intake you are using.
3. Heads or valve train. As with intakes, the heads play an important part in the effeciency of a cam.
Vacuum problems. When an engine surges at an idle it usually is due to an air leak somewhere. The problem with aluminum intakes are that that they are susceptible air leaks if they are not installed carefully and torqued correctly. Also the carburetor gasket can cause problems if air is leaking past.
These are some suggestions to look at. First and foremost, I would pull the spark plugs and take a look at them as they can show you a lot about what is going on internally.
