Description
iFJF 1406 600 CFM Performer Carburetor — Electric Choke, 4-Barrel Square Bore
The iFJF 1406 Performer Carburetor delivers 600 CFM of reliable street performance in a bolt-on package designed as a direct replacement for the Edelbrock 1406. With an electric choke for hassle-free cold starts, a two-piece all-aluminum body that resists warping, and tunable metering rods that change in seconds without removing the carburetor, this is the go-to upgrade for small-block and mild big-block engines running square-bore intake manifolds.
Key Features
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600 CFM Flow Rating: Optimized for street-driven V8s from 305 to 402 cubic inches — delivers crisp throttle response and strong mid-range torque without sacrificing fuel economy.
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Electric Choke: Automatic cold-start enrichment. No cable to route, no manual adjustment needed after initial setup. Wired to a 12V ignition-switched source.
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All-Aluminum Two-Piece Construction: Lighter than cast-iron competitors and runs cooler. Two-piece design reduces warping risk and simplifies disassembly for tuning or cleaning.
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No Power Valve to Blow Out: Unlike Holley-style carbs, the Edelbrock-compatible design uses metering rods instead of a power valve — engine backfire won't leave you stranded with a flooded engine.
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Tool-Free Rod Changes: Metering rods and springs can be swapped in seconds through the top cover — no carb removal, no draining fuel bowls.
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Complete Kit: Includes everything you need: carburetor, square-bore base gasket, horn gasket, air cleaner stud, 2 fuel filters, 4 clamps, fuel line, red choke positive wire, and black choke ground wire.
Compatibility
This 4-barrel square-bore carburetor fits square-bore intake manifolds including:
- Edelbrock Performer EPS
- Edelbrock Performer RPM
- Edelbrock RPM Air Gap
- Edelbrock Torker II
- Other aftermarket square-bore manifolds with the same flange pattern
Important Fitment Notes
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NOT for computer-controlled applications — including GM vehicles with Q-Jet carburetors (1981+) and Ford vehicles with AOD transmissions (1981+).
- For engines with a spread-bore intake manifold, an adapter plate is required (sold separately).
- Recommended fuel pressure: 5.5–7 psi. Install an inline fuel pressure regulator if your mechanical pump exceeds 7 psi.
- Throttle linkage stud location matches Edelbrock Performer series — compatible with most GM, Ford, and Mopar throttle cable/kickdown brackets.
Specifications
| CFM Rating |
600 CFM |
| Barrel Configuration |
4-Barrel Square Bore |
| Choke Type |
Electric |
| Material |
Aluminum (two-piece construction) |
| Fuel Inlet |
5/8"-20 thread (fits 3/8" flare fitting) |
| Secondary Type |
Mechanical |
| Primary Venturi |
1-7/16" |
| Secondary Venturi |
1-11/16" |
| Throttle Bore |
1-11/16" (primary & secondary) |
| Part Number |
CBRT-1405 (replaces Edelbrock 1406) |
| SKU |
FJ-CBRT-1406 |
| Price |
$239.99 |
What's Included
- 1 × 1406 Performer Carburetor (Electric Choke)
- 1 × Square-Bore Base Gasket
- 1 × Horn Gasket
- 1 × Air Cleaner Stud
- 2 × Fuel Filters
- 4 × Clamps
- 1 × Fuel Line
- 1 × Red Choke Positive Wire
- 1 × Black Choke Ground Wire
- 1 × Mounting Hardware Kit
Why Choose iFJF?
Unlike buying a used, worn-out Edelbrock 1406 on eBay that needs a rebuild, the iFJF 1406 arrives factory-fresh and ready to run. At $239.99 — roughly half the price of a new Edelbrock — you get the same 600 CFM performance, the same square-bore footprint, and compatible internal parts (uses Edelbrock rebuild kit #1487 if you ever need to service it later). Every unit is pressure-tested before shipping. Backed by a 30-day return policy and expert tech support.
Installation Tips
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Fuel Pressure: Verify 5.5–7 psi at the carb inlet. Mechanical pumps on some engines (especially big-block Chevys) can spike above 9 psi — use a regulator.
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Choke Wiring: Connect the red wire to a 12V ignition-switched source (not coil positive). The black wire goes to a clean chassis ground. The choke housing must NOT be grounded through the carb body — use the dedicated ground wire.
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Initial Tune: Set idle mixture screws 1-1/2 turns out from lightly seated as a starting point. Set idle speed to 700–800 RPM (manual trans) or 650 RPM in gear (automatic).
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Float Level: Pre-check float level before installation. Fuel level should be 7/16" from the top of the bowl with the engine idling and the sight plug removed.
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Break-In: Drive the vehicle for 20–30 minutes at operating temperature. Re-check idle mixture and speed after the engine heat-soaks.
Frequently Asked Questions
Q: Is this a genuine Edelbrock 1406?
A: No — this is an iFJF replacement carburetor engineered to match the Edelbrock 1406 in fitment, CFM rating, and performance. It is not manufactured by or affiliated with Edelbrock. However, the internal design is compatible with Edelbrock rebuild kit #1487 for future servicing.
Q: What's the difference between the 1405 and 1406?
A: The main difference is the choke type. The 1405 has a manual choke (you pull a cable from the cabin), while the 1406 has an electric choke that operates automatically. Both flow 600 CFM and share the same bolt pattern.
Q: Will this fit my 350 Chevy / 351 Ford / 318 Mopar?
A: It fits any engine with a square-bore intake manifold. If your engine currently has a spread-bore (Quadrajet-style) intake, you'll need a square-bore adapter plate. This carburetor works well on small-blocks from 305–402 cubic inches with mild to moderate cam profiles.
Q: Can I use this on a marine engine?
A: We do not recommend this carburetor for marine use. Marine applications require a USCG-approved carburetor with specific safety features (J-tube vents, sealed throttle shafts). Misfueling a marine engine can create a fire hazard.
Q: Do I need to adjust anything out of the box?
A: The carburetor is pre-calibrated for typical street engines, but you should always check float level, set idle mixture, and verify choke operation before driving. Every engine combination is different, so some fine-tuning is expected.
Q: What fuel line fitting size do I need?
A: The fuel inlet is threaded 5/8"-20. Most installations use a 5/8"-20 to -6AN or 3/8" inverted flare adapter (commonly included with aftermarket fuel line kits). A 3/8" fuel line is recommended for engines making up to 400 hp.
Q: How does this compare to rebuilding an old Edelbrock 1406?
A: A rebuild kit costs $25–$50 and takes 3–4 hours, but it doesn't fix worn throttle shaft bores, corroded castings, or stripped threads — common issues on 20+ year-old carbs. At $239.99, the iFJF 1406 gives you a brand-new casting with fresh components and zero wear. If you prefer rebuilding, check out our Edelbrock 1406/1405 Rebuild Guide.
Q: What's your return policy?
A: 30-day returns. If the carburetor doesn't meet your expectations, return it in resalable condition for a full refund. Please don't install it with permanent modifications (filing, drilling) unless you're sure you're keeping it.
