Report Smog pump/diverter valve delete in 1965-83 Avanti Posted September 13, 2018 RQB3430 1982 Avanti-II. I installed an Edelbrock 1403 500 cfm carb and Edelbrock Performer Model 2701EPS intake manifold, HEI distributor, and removed the smog pump equipment. The old GM air cleaner will not fit the Edelbrock carb. The new Edelbrock air cleaner required a 3/4 inch lower air cleaner element in order for the hood to close. I also installed a 4th gear kickdown switch to overdrive, necessitated by the removal of the old computer-controlled carb and distributor. Without the computer, the transmission could not otherwise shift into overdrive.