94 z28 problems
If it hasn't been tuned for the mods you have(especially the cam), I'd say that's the source of the problem.
Although, I've had the same problem and it ended up being the coolant temperature sensor. It was the one in the water pump. It was giving the pcm a -44* reading, making it run extremely rich. $8 and easy to replace. Just a thought. I always start with the less exspensive problem and work my way up. Good luck and post your results.


