Originally Posted by hotrodvarn
How much should ur dial in range from say 3pm @ 100 degrees till say 10pm @ 75 degrees...My car gas/carb/sbc for some reason will pick up a tenth in this situation.....Then u go to next round and the air/hum can be the same as before and the car will slow down about 2 hundredths.....they tell me to start with the jetting first..{plugs are a lil rich,but not that bad}also i'm gettin a lil black smoak out of the headers...... Anyone know where to start @ lookin for answers in this...Thanks
It sounds like you are too fuel rich lean that puppy up and go faster and as the temp. and hum. decrease increase jet size.
You may also want to put a thermo couple in #3 cyclinder header tube 2" from the header flange and monitor EGT this is an inexspensive way to tune your fuel air ratio.