Description
Product Overview
The iFJF 1403 Performer 500 CFM 4-barrel carburetor is a square-bore, electric-choke replacement for classic small-block V8 builds such as the Plymouth Barracuda and Chevy Camaro. Edelbrock calibrates the Performer Series for small-cubic-inch engines — 305 cu in and smaller Chevrolet and 302 cu in and smaller Ford — and the 4150-pattern flange bolts straight to a square-bore intake. The two-piece aluminum body holds its tune once set, and no EGR provisions are used.
Key Features
✓ 500 CFM Calibration For Small-Cubic-Inch V8s: Factory-calibrated for 305 cu in and smaller Chevrolet and 302 cu in and smaller Ford, plus dual-quad C-26 / F-28 applications.
✓ Electric Choke: A switched 12V feed gives clean cold starts without running a manual choke cable into the cabin.
✓ Vacuum Air-Valve Secondary: Edelbrock's Performer Series uses a vacuum-operated air valve secondary for progressive part-throttle response.
✓ Tunable Without Removing It: Metering rods, jets and the step-up spring can be changed on the engine — no fuel draining.
✓ Two-Piece Aluminum Body: The lightweight all-aluminum, two-piece body resists warping and is compatible with blended pump fuel.
✓ Bolt-On 4150 Square-Bore Flange: Fits square-bore intakes directly; timed and full vacuum ports are included for ignition advance.
Vehicle Compatibility
| Direct Fit |
Any 4150 square-bore intake manifold |
| Common Builds |
Plymouth Barracuda and Chevy Camaro small-block V8s |
| Calibrated For |
305 cu in and smaller Chevrolet; 302 cu in and smaller Ford |
| Dual-Quad |
Edelbrock C-26, F-28 and Street Tunnel Ram manifolds |
| Adapter Required |
Spread-bore Quadrajet or Chrysler Thermoquad — Edelbrock #2696 / #2697 |
| Not For |
Computer-controlled applications (some 1981+ GM Q-Jet, some 1981+ Ford AOD) |
Technical Specifications
| CFM Rating |
500 CFM @ 1.5 inHg |
| Barrel Configuration |
4-Barrel, Square Bore (4150 pattern) |
| Choke Type |
Electric (switched 12V) |
| Secondary Type |
Vacuum-Controlled Air Valve |
| Finish |
Satin Aluminum |
| Bore Diameter |
Primary 1.44" / Secondary 1.69" |
| Main Venturi Diameter |
1.19" |
| Body Height |
3.25" |
| Mounting Flange |
Square Bore, 4150 pattern |
| Material |
Aluminum (two-piece body) |
| Vacuum Ports |
Timed and full vacuum ports included for ignition advance |
| EGR Provisions |
None |
| Fuel Type |
Gasoline — not calibrated for alcohol, race fuel or E85 |
| Fuel Pressure |
6.5 psi maximum; set an adjustable regulator to 5.5 psi |
| Recommended Displacement |
305 cu in and smaller Chevrolet; 302 cu in and smaller Ford; dual-quad C-26 / F-28 |
| Included |
Square-bore base gasket, air horn gasket, air cleaner stud, red choke positive wire and black choke ground wire, 2 vacuum caps, vacuum tee, 1/4" NPT pipe plug, throttle cable ball-end stud with nut and star washer. Carburetor studs sold separately (Edelbrock #8008 or #8024). |
Why Choose iFJF?
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Quality Assurance: Every product undergoes rigorous quality inspection before shipping.
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USA-Based Inventory: Products ship from our US warehouse — no waiting for international freight.
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Expert Support: Our team knows automotive, truck, and RV parts. Real answers from real people.
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Fair Pricing: Premium quality without the premium markup — direct value to you.
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Hassle-Free Returns: 30-day return policy. If it doesn't fit or meet your expectations, we'll make it right.
Backed by ISO 9001:2015 and IATF 16949:2016 quality management system certifications.
Installation Tips
- Check fuel pressure before the first start — Edelbrock's limit is 6.5 psi, with a regulator set to 5.5 psi
- Fit a new square-bore base gasket and air horn gasket; Edelbrock's warranty is void if dirt found in the carburetor is traced to a missing filter
- Tighten the mounting nuts evenly over several steps — overtightening can distort the two-piece aluminum body
- Run the choke positive lead to a switched 12V source (Run position only) and ground the black wire to the carburetor body
- Cap every unused vacuum port using the supplied vacuum caps; plug an unused rear port with the supplied 1/4" NPT pipe plug
- Check for fuel and vacuum leaks before the first road test
Frequently Asked Questions
Q: Will this carburetor fit my engine?
A: The 1403 is a square-bore carburetor with a 4150-pattern flange, so it bolts directly to any square-bore intake manifold. It is calibrated for small-cubic-inch engines — 305 cu in and smaller Chevrolet, 302 cu in and smaller Ford — and for dual-quad applications such as the Edelbrock C-26, F-28 and Street Tunnel Ram. A spread-bore intake such as a Quadrajet or Chrysler Thermoquad needs Edelbrock adapter #2696 (or adapter-and-fuel-line kit #2697). It is not for computer-controlled applications, which includes some 1981-and-later GM vehicles with a Q-Jet carburetor and some 1981-and-later Ford vehicles with an AOD transmission.
Q: Is 500 CFM enough for my engine?
A: Edelbrock builds the Performer Series around small-cubic-inch engines: this 500 CFM version for 305 cu in and smaller Chevrolet and 302 cu in and smaller Ford, and 600 CFM (such as #1406) for larger or higher-revving combinations. Match the CFM rating to the engine rather than fitting the biggest number available.
Q: What fuel pressure does this carburetor need?
A: Per Edelbrock's installation instructions, do not use more than 6.5 psi fuel pressure — excessive pressure causes flooding. The owner's manual adds that pressure at idle should not exceed 6.0 psi, that an adjustable regulator should be set to 5.5 psi, and that pressure should not drop below 2.0 psi at high rpm and wide-open throttle. A regulator such as Edelbrock #8190 is used if the pump runs higher.
Q: Do I need an adapter or a throttle linkage kit?
A: No adapter is needed on a square-bore intake. A spread-bore Quadrajet or Chrysler Thermoquad intake needs Edelbrock adapter #2696 or kit #2697. Connect the electric choke to a switched 12V source (Run position only) and ground it to the carburetor body. The throttle cable ball-end stud is removable and is installed in the position your linkage requires; 1977-and-later Chevrolet applications use the Edelbrock #8009 throttle cable adapter stud. Ford vehicles with an automatic transmission need Throttle Lever Kit #1483, Chrysler vehicles with an automatic need Throttle Lever Kit #1481, and Ford cable linkage may need a Throttle Cable Plate Kit (#1490 for 289-302, #1491 for 351-W, #1493 for 351-C and 351-M/400, #1495 for 429/460).
Q: What fuel can I run in it?
A: Gasoline only. Edelbrock states that Performer Series carburetors are not calibrated for or compatible with alcohol, race fuel or E85 pump fuel, and that using those fuels will damage the carburetor and other fuel system components. Blended pump fuel is acceptable up to about 10% ethanol (E10); above that a richer calibration may be required.
Q: Can I change the jets and metering rods myself?
A: Yes. The metering rods, jets and step-up spring can be changed with the carburetor still on the engine — no removal and no draining of the fuel bowl. The carburetor ships factory-calibrated with orange (5 in-Hg) step-up springs, so start from the factory setting and change one step at a time.
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