Description
Carburetor Calibration Tuning Kit for Edelbrock Performer & Carter AFB Series
Fine-tune your Edelbrock Performer Series carburetor or Carter AFB with this comprehensive calibration kit. Whether chasing optimal air/fuel ratios after a cam swap, compensating for altitude changes, or dialing in a modified engine, this kit provides the metering rods, main jets, and step-up springs you need.
What's Included
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Metering Rods — Multiple sizes for cruise and power modes; fine-tune part-throttle and WOT fueling
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Main Jets — Range of primary and secondary jet sizes for overall fuel delivery adjustment
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Step-Up Springs — Color-coded spring set (blue, yellow, orange, pink, silver) for transition RPM control
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Storage Case — Organized compartment tray to keep components sorted
Compatible Carburetor Models
| Model |
CFM |
Choke |
| Edelbrock 1400 |
600 |
Electric |
| Edelbrock 1404 |
500 |
Manual |
| Edelbrock 1405 |
600 |
Manual |
| Edelbrock 1406 |
600 |
Electric |
| Edelbrock 1407 |
750 |
Manual |
| Edelbrock 1408 |
500 |
Electric |
| Edelbrock 1409 |
600 |
Electric (Marine) |
| Edelbrock 1411 |
750 |
Electric |
| Carter AFB 9000 |
400-750 |
Various |
When to Re-Calibrate
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Altitude changes — Leaner jetting for high-altitude operation
-
Camshaft upgrades — Larger cams often need richer idle and transition circuits
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Intake/exhaust modifications — Headers and intake manifolds change airflow characteristics
-
Fuel type changes — Ethanol-blended fuels require slightly richer jetting
-
Seasonal tuning — Cold winter air is denser and may require richer jetting
Frequently Asked Questions
Q: Does this kit fit the Edelbrock 1406 (600 CFM electric choke)?
A: Yes. This calibration kit is compatible with all Edelbrock Performer Series carburetors including the popular 1406 model.
Q: What jet sizes are included?
A: The kit includes a range of primary and secondary main jets, metering rods across multiple cruise/power step sizes, and a selection of step-up springs covering the full tuning spectrum.
Q: Can I use this kit with ethanol-blended fuel?
A: Yes. Gaskets and seals are compatible with E10/E15 fuels. Target slightly richer (0.5 AFR) for ethanol.
Q: Do I need this kit for a stock carb on a stock engine?
A: If running a stock Edelbrock carb on a stock engine at sea level, factory calibration is typically close. This kit is ideal for modified engines, altitude changes, or tuning optimization.
Q: How difficult is carburetor tuning for a beginner?
A: Edelbrock/Carter AFB carbs are among the easiest to tune — rods and jets can be changed without removing the carburetor. Start with one change at a time and keep notes.
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