Hellow guys, Welcome to my website, and you are watching Holley Carburetor Tuning: Idle Circuit Mods for High Duration Camshafts. and this vIdeo is uploaded by Racing and Automotive, How to's and advice at 2015-10-16T23:53:05-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.