Quick Fuel Billet Metering Blocks Product images may differ from actual product appearance. Billet Metering Block Fully Tunable for Street/Strip applications. Retains original vacuum passage for distributor vacuum advance. Idle feed restriction, emulsion and power valve channel restriction tunable with screw-in brass restrictions. Calibration upgrade without sacrificing street vacuum provisions. This will fit any standard Holley two or four barrel carburetor (except 3 circuit Dominator and alcohol calibration carburetors) Billet Secondary Metering Block Use this metering block to convert from a metering plate to metering block. This kit enables you to convert your single or dual inlet carburetor from a secondary metering plate to a secondary metering block. Kit includes a longer transfer tube and longer fuel bowl screws. Features adjustable idle feed restriction. Billet Metering Block Conversion Kit For all Holley Double Pumper carburetors. Allows you to upgrade to billet metering blocks with a more aggressive calibration essential with engine modifications. Have tunable idle feed restrictions. Will also facilitate a conversion to four corner idle (some additional modifications to carburetor required). This kit will replace the original metering blocks with a more aggressive ''race oriented'' calibration. Adjustable idle feed restriction enables you to fine tune the idle, not possible with press in restriction carburetors.

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Billet Metering Block Gasoline Racing Adjustable Metering Five Stage Emulsion Changeable Emulsion Bleeds View this item

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Billet Metering Block Standard Calibration Adjustable idle feed restrictions - .033" designed to fit most real world street & strip carburetors More info on Quick Fuel 34-4

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Billet Metering Block Alcohol Fits 4150 Series Carburetors Adjustable Metering Four Emulsion Holes Changeable Emulsion Bleeds View this item

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Billet Metering Block Fits 1850, 3310, 80475 and double pumpers 4776 thru 4781 Carburetors View this item

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Billet Secondary Metering Block Fits 1850, 3310, 9834, and 80457 Carburetors View this item

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Billet Metering Block Conversion Kit Fits Holley 4776-4781 Carburetors View this item

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