Upgrade your Double Pumper with race-ready billet metering blocks! Primary block retains the original vacuum provisions. Secondary block has no power valve provision to fit the latest generation of carburetors. Kit includes necessary gaskets for conversion. These blocks have a four corner idle system provision. You must have the correct throttle body for the four corner idle system to work. Engine Carburetor Metering Block Upgrade Kit. Fits 750-850 CFM 4150 Style Carburetors. For Four Corner Idle System Carbs Only. Includes Primary And Secondary Metering Blocks With Gaskets. Made from Billet Aluminum Material. Clamshell Packaged For Retail Display.
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