I don't know how to fix the rich carb. Is it just the idle screws or Do I get a larger carb with more cfm. Right now I got a 600 should I get a 650 or 700? Do I need to jet the carb.
In need of some help. Just got my rebuilt motor back from builder. I asked the builder for two things for my build 1) vortec heads on my original 85 block and 2) to be able to run pump gas 87 octane.
Got the motor up, broke in, and running but plugs are real black and sooty. Also engine is...