Designed for small-block and small displacement big-block engines, these carbs are recommended only for stock to Performer level applications. They are not recommended for use on RPM or Torker II intake manifolds. Match with an Edelbrock Performer or Performer EPS manifold and other brands of similar design. Calibrated 2% leaner than #1405. Includes both timed and full vacuum ports for ignition advance. Comes with: Metering Jets - Primary .098, Secondary .095; Metering Rods - .075 x .047; Step-Up Spring - yellow (4" Hg). Edelbrock Reconditioned Performer Series Carb 9906 600 CFM - Square Flange - Electric Choke - w/o EGR - Includes Primary Jet-0.098 - Secondary Jet-0.095 - Mtrng Rd-0.075x0.047 - Dual Pln Int - St/Hi PerfBurnished AluminumGM/AMC-Style Throttle LinkageElectric Choke Installed from FactoryEasy Tuning with 2-Piece DesignSmooth Secondary TransitionBoth Timed and Full Vacuum PortsIncludes PCV OutletApplications include: 300, 330, 440, 442, 880, 98, Aspen, B100 Van, B150 Van, B200 Van, B250 Van, B300 Van, B350 Van, Barracuda, Bel Air, Belvedere, Belvedere Ii, Biscayne, Blazer, Blazer K5 Pit Stop USAoffers Edelbrock Reconditioned Performer Series Carb 9906 at low everyday prices. Be sure to check out all of the products from Edelbrock including Edelbrock Fuel System and Intake Parts and Accessories, Edelbrock Carburetors, Edelbrock Gasoline Carburetors, Edelbrock Carburetors, Edelbrock Performer Remanufactured Carburetors.