Edelbrock 1948 AVS2 Carburetor Calibration Kit

Vehicle Fitment

• Compatible with Edelbrock AVS2 650 CFM carburetors - not a standalone carburetor, but a calibration kit for tuning.
• Universal / Multi-Fit application - appropriate for any engine using an AVS2 650 CFM carb where proper tuning of jets/rods is needed.

Features

• Full calibration kit including multiple jets and metering rods - enables tuning for richer or leaner fuel/air mixtures
• Includes a variety of jet sizes and rod sizes for fine-tuning both cruising and performance modes
• Comes with multiple step-up springs, allowing adjustment of secondary circuit activation pressure
• Includes all necessary retaining hardware (hairpin springs, metering-rod retainers) for secure installation
• Reusable storage case - keeps all small parts organized and protected
• Calibration chart included - provides reference for correct jet/rod/spring combinations for various tuning conditions
• Helps optimize fuel flow and mixture across different engine builds or modifications
• Useful for maintenance, performance upgrades, altitude/fuel-type changes, and seasonal tuning adjustments

Specifications

• Included Jets: multiple diameters (e.g. 0.092, 0.095, 0.100, 0.104, 0.107 in)
• Included Metering Rods: multiple taper/sizes allowing mixture tuning
• Included Step-Up Springs: multiple spring rates (e.g. for 3, 4, 5, 7, 8 inHg step-up thresholds)
• Retaining Hardware: meter-rod springs, hairpin springs
• Supply: calibration kit only - does not include carburetor body, throttle linkage, choke, or mounting base

Included Components

• Multiple pairs of jets (various sizes)
• Multiple metering rods (various tapers/sizes)
• Various step-up springs (different vacuum thresholds)
• Meter-rod retaining springs and hairpin springs
• Calibration chart specifying recommended rod/jet/spring combos
• Reusable storage case for organized storage of components

Product Description

The Edelbrock 1948 AVS2 Carburetor Calibration Kit is designed to give tuners full control over the fuel/air mixture of their AVS2 650 CFM carburetor - enabling precise adjustments for varied engine conditions, performance requirements, or altitude/fuel changes. By offering a broad selection of jets, metering rods, and step-up springs, it allows the owner to lean out or richen the mixture, adjust secondary opening behavior, and optimize drivability or power output. The included calibration chart helps guide the tuner to the correct combination depending on application.

This kit is ideal for custom builds, performance engines, classic cars, or any scenario where the stock calibration of the carburetor may not deliver optimum results. Because it does not include a carburetor body itself, it must be used in conjunction with a compatible AVS2 650 CFM carburetor. Proper tuning may require attention to float levels, ignition timing, and fuel pressure to achieve best results.