Rochester Quadrajet 4BBL Part throttle Adjustment tuning for cruise

Rochester 4BBL, part throttle, primary metering rods, adjustment
Radperformance/SWEPCO South West Petroleum
Hi-Performance parts/Service and Lubricants (Oil, Gear, Tranny, Grease)
contact: [e-mail] for any questions

[@davidlane9379]

What size tap and plug were used?

[@Hitman-ds1ei]

1/8 NPT