Metering Jets .077

The Edelbrock Metering Jets .077 (Part No. 1420) is a precision carburetor jet engineered for fuel mixture calibration in Edelbrock carburetors. These brass jets control the fuel flow rate through the main metering circuit, directly influencing air-fuel ratio, throttle response, and engine performance across the RPM band. Supplied as a matched pair, they are essential for tuning Edelbrock carburetors to match engine displacement, intake design, and altitude conditions.

The .077-inch internal diameter jet size is part of Edelbrock's graduated range of metering jets, allowing builders and tuners to fine-tune fuel delivery for optimal combustion. Proper jet selection ensures smooth idle quality, prevents hesitation during acceleration, and maximizes fuel economy without sacrificing drivability. Brass construction provides durability and corrosion resistance while maintaining precise flow characteristics. Installation requires removal of the carburetor bowl and metering block, making them accessible for field adjustment during dyno tuning or performance calibration.

These jets are ideal for street and performance carburetors where fuel mixture optimization is critical. Engine builders, performance shops, and carburetor rebuilders routinely stock multiple jet sizes to dial in carburetors for different applications—whether tuning a classic muscle car, street rod, or race engine. The .077 size sits in the mid-range of Edelbrock's jet lineup, making it a common choice for moderate displacement engines and naturally aspirated builds. Purchasing a matched pair ensures balanced fuel flow across both float circuits.