It's rich from basically off idle to 30 to 45 mph cruise. I'm not sure on the list numbers on the carbs. Whatever is correct for a 70 auto. I had to buy 2 of them from Tonys parts. And sent them all in to Harms for a rebuild. I'm going to go pull some plugs and see what they look like. Had to order jets as no one sells them locally. (small town living)