I have been following along here on the side lines. Maybe my thoughts will be of help/maybe not..
Compression between 9.4-9.7 is what my guess. Guys already have that narrowed down pretty close.
I think you are about ready to do a cam change only to be back were you started.
Cam timing is probably correct now. It was clearly wrong before. Odds of the indexing being off that much is pretty slim. Since you corrected that, and it runs worse now, it indicates to me the advanced cam timing was somehow nursing the engine problem along.
Are there pictures of the spark plugs anywhere on this thread? What are they? What heat range? Could it be the engine is wanting a plug with a colder heat range?
May I suggest checking this with a timing light would be a worth while and save you some greif. Get or barrow an adjustable light so you can check where the timing comes in at and the full advance. Then you can also tell if the light starts jumping around when the issues start to occur. Might help you track down module and pickup issues.
I have used that basic 204/214 cam in a ton of engines. We messed with advancing/retarding on one of them. You can retard it a bunch and still run good. Adding advance you find yourself walking around the car to see if someone hooked a trailer behind the car. But generally the adv/ret did not cause an engine miss, they just quit making power. The compression test looks to me like it was dead on where I would expect for the compression and the various cam timing check so far.
Anyways, hope you get it figured out. Lots of great advice going on already. Defineltly needs a better cam, but sure would be nice to find the issue first.
Jay
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