Billet Metering Plate Kit - 3310

The Billet Metering Plate Kit - 3310 from Quick Fuel Technology is a precision secondary-to-primary jet conversion component engineered for serious carburetor tuning on Holley 4160-style applications. This red anodized aluminum plate exists to solve a critical challenge: enabling custom fuel metering transitions between secondary and primary circuits in high-performance engines where stock metering doesn't match modified airflow and ignition requirements. Whether you're running a street machine, bracket racer, or naturally aspirated engine build demanding precise fuel curve control, this kit delivers the hardware needed to dial in lean cruise economy or aggressive wide-open-throttle enrichment.

Constructed from billet aluminum and finished in durable red anodize, the metering plate features a center pivot design that maintains the original Holley 4160 geometry while allowing you to swap main jet configurations. The included gasket ensures a sealed interface between the plate and carb body, preventing fuel vapors and air leaks that degrade idle quality and transition response. By converting secondary metering to primary jet sizing, tuners gain the ability to independently calibrate fuel delivery at part throttle and full load—a capability that separates dialed-in carburetors from ones that merely run. The compact 2.8 x 0.6 x 5.9-inch form factor integrates seamlessly into existing installations without requiring adapter rings or manifold modifications.

This kit is ideal for engine builders and carburetor specialists who've hit a tuning wall with stock metering circuits—particularly those running forced induction, cam profiles exceeding 240° duration, or fuel-injected-style ignition curves on carbureted platforms. Installation requires carburetor removal and disassembly; fasteners, the pivot pin, and included gasket work with standard Holley center pivot hardware. Compatibility is absolute with Holley 4160 carburetors across 2-barrel and 4-barrel configurations, making it a drop-in upgrade for vintage muscle cars, hot rods, and competition vehicles where fuel precision directly impacts horsepower and drivability.