Originally Posted by camaro freak
After driving the car for about an hour I pulled a plug to read it. It looked much better than the other plugs. After studying the plug link and making comparisons to the pictures I would say that the Holley is only slightly rich and I need to bring timing down to around 14 deg advance from 16 degrees, but really the plug is very close to looking like the picture of best. Now here is a question for the BG tech! If the BG Mighty Demon carb I have listed on eBay don't sell can I replace the metering blocks with a set that is leaner or is changing the jets all that can be done?
The Mighty Demon has an adjustable idle feed restrictor as well as adjustable idle air bleeds so if the idle circuit needs to be leaned out it can be done by a combination of both.