Awesome! How accurate is tuning with a O2 sensor if you're only watching one set of cylinders?

What is the part no of the o2 setup you're using? I'm using the 390, clifford, hei, but I'm using fenton headers. I want to be able to watch out for a lean condition. Can I mount the 02 bung in one of my head pipes?

BTW, how do you change the cruising mixture on a Holley 390??

thanx

chip


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