Last week I was working on replacing my oil pressure sending unit and I bumped the distributor while I was wrenching it down in place. The distributor rotated on me slightly and I tried to set it back to where it was but after a test drive the car ran real sluggish and backfired. Before the oil pressure sending unit I also replaced the fuel sending unit in the gas tank (fuel gauge had stopped working too) and this was the first test drive since either were replaced.
Broke out the timing light and found that the initial timing has to be between 30-35 (using a digital timing light like this one), anything more or less and the car starts to bog down. I know that 30-35 is usually the total timing, but this is my initial timing at around 700-800 RPM at idle... All this, and no matter where I set the timing I can still hear it backfiring occassionally in the exhaust.
My father rebuilt the engine a few years ago and he put a mild RV cam in it and electronic ignition, but everything else is stock (350 with 2bl carb). The motor idles rough (it's always idled a little rough and as I'm a novice I just figured it was the cam. It would always die several times when first cranking up from a cold start and putting it in gear, but once it was warm it would do ok) but now when I put it in gear the engine stalls out even with the engine warm. I've also noticed a really strong exhaust odor lately, the kind that permeates into the skin and clothes prompting demands of an immediate shower from other members of the household once I come inside the house.
Any ideas where I should even start here?