Still using 1950 technology? Upgrade your carburetor with PROFORMs 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. Sold as one kit.

Product Details:

• Engine Carburetor Metering Block
• Race-Oriented Calibration Model
• Fits Holley 4150 And 4160 Models
• Made from Billet Aluminum
• Purple Anodized Finish
• Includes 2 Gaskets And Vent Baffles
• Clamshell Packaged For Retail Display
• Sold As One Kit