Still using 1950's technology? Upgrade your carburetor with PROFORM's new race-oriented billet metering blocks. Each unit is CNC machined from solid billet aluminum for added strength and durability and features changeable idle feed restriction, 4 emulsions for more aggressive tuning, and additional racing application upgrades.

Features:
Race-Oriented Calibration Model
  • Fits Holley® 4150 and 4160 Models
  • Purple Anodized Finish
  • Made from Billet Aluminum
  • Includes Two Gaskets and Vent Baffles
  • PROFORM Parts Brand Product
  • Sold Individually
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