On the water/carbon. I heard this from my auto-shop teacher who was dang smart in my opinion.. Just pour some water down the carb as the engine is running. He suggested a couple cups of water over about a minute.

I promptly tried it on my mildly cammed 283. It seemed to work fine. In my typical youth I decided if a little is good, more should be good-der. I drug out the garden hose to try an experiment. I got the hose running at, I would estimate, about 3gals/minute. I kinked it in one hand, climbed on the engine and started dribbling it into the carb. As I dribbled more and more, the engine slowed down. This required more throttle. I eventually had the garden hose unkinked (fully open) running into the engine pegged at full throttle. The engine was running at about 1,800rpm. Clouds were coming out the back and I later detected a large black, (soot), puddle behind the car.

Anyway I thought I'd pass this on. I wouldn't recommend it NOW just on principals, but a running engine can ingest a whole lotta water, without harm.