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Proform, Billet Metering Blocks, Holley 4150 Race |
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Proform Billet Metering Blocks
CNC machined from solid aluminum. Virtually eliminates porosity problems common to cast metering blocks. Will not warp. Features changeable idle feed restriction, 4 emulsions for more aggressive tuning, and additional racing application upgrades. Includes 2 gaskets and vent baffle. Fits Holley/Quickfuel 4150/4160.
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