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
  • More From This Category

    Proform , Ford Small Block Header Gasket Set, Conforms to Surface of Exhaust Header

    Proform , Ford Small Block Header Gasket Set, Conforms to Surface of Exhaust Header

    $52.42

    Proform , Pontiac HEI Distributor Red Cap, Fits Pontiac 326-455 V8 Engines

    Proform , Pontiac HEI Distributor Red Cap, Fits Pontiac 326-455 V8 Engines

    $420.05

    Proform , Chevrolet Performance Valve Cover Wing Nuts, Shark Gray Finish, Red Bowtie Emblem

    Proform , Chevrolet Performance Valve Cover Wing Nuts, Shark Gray Finish, Red Bowtie Emblem

    $64.56

    Proform , 8" Harmonic Balancer Chevy Big Block 454, Fits Chevy Big Block 454 (pre-'89)

    Proform , 8" Harmonic Balancer Chevy Big Block 454, Fits Chevy Big Block 454 (pre-'89)

    $263.77

    Proform , Chrome Mini Nuts w/ Stainless Steel Washers, Chrome Finish; High-Quality Aluminum

    Proform , Chrome Mini Nuts w/ Stainless Steel Washers, Chrome Finish; High-Quality Aluminum

    $29.07

    Proform , Chevrolet Starter 1.4KW; 11:1 Ratio, 153 & 168 Tooth Flywheels

    Proform , Chevrolet Starter 1.4KW; 11:1 Ratio, 153 & 168 Tooth Flywheels

    $362.57