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Since 1952
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Holley Flathead Carburetor Adapter

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Bolt Hole Pattern:
Inside: 4.25" x 5.60", Outside: 5.16" x 5.60"
Gasket(s) Included:
Yes
Hardware Included:
Yes
Garage Sale:
No
Overall Height:
.50
Overall Width:
5.843
Overall Length:
6.375
Bore Size:
1.50
Bore Size (Opposite):
1.69
Notes
Bolts a Holley, Edelbrock, or Carter AFB to the early 50's WCFB pattern.
Holley Flathead Carburetor Adapter
Holley Flathead Carburetor Adapter
Holley Flathead Carburetor Adapter
Holley Flathead Carburetor Adapter

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

Adapts standard Edelbrock or Holley 4 barrel carb to the smaller '50s WCFB bolt pattern manifold.

This carb adapter includes gaskets for both top and bottom sides as well as mounting hardware.

Notes

  1. Bore size is 1.5" on the small side and tapers to 1.685" on the large side.
  2. Smaller Inner Bolt Pattern:
    • Side to side is 3-3/4" center to center
    • Front to rear is 3-7/8" center to center
  3. Outer Bolt Pattern:
    • Side to side on inner pattern is 4-1/4" center to center
    • Side to side on outer pattern is 5-1/8" center to center
    • Front to rear is 5-5/8" center to center

Customer Reviews

Rated 5 out of 5 by 3 reviewers.
RATING BREAKDOWN
3 reviews
5 Stars
3
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

dlhnova1
Verified Purchaser

Perfect fit, includes gaskets!

August 19, 2014
I used this for a 1955 Buick Nail head and it worked perfect! Picture doesn't show gaskets, but I was relieved to see that they were included. The only other thing to mention, is that I had to center the butterflies before tightening the carb down, it's close, but it works great! The car never run so good.
Pros:
  • includes gaskets
Yes, I recommend this product.
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none
Verified Purchaser
minn.

Worked great

September 26, 2011
Fit perfect
Pros:
  • Easy To Use
Yes, I recommend this product.
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Don
Aston PA

Great

March 15, 2010
Brian Robinson REALLY helped me out ----Again!!!!!!!!!!
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

3 questions : 3 answers

1 answers

Will this adapter plate fit a 1956 desoto 330ci hemi with a WCFB four barrel

Fireflite
New York, NY, USA
November 25, 2014

Will this adapter plate fit a 1956 desoto 330ci hemi with a WCFB four barrel

Answers

November 25, 2014
EricM
Yes this will convert a WCFB intake manifold to accept a common Holley square bore carburetor.
1 answers

Will this work for a edelbrock 1406 I want to replace my 1954 Carter WCFB with a Edelbrock 1406. Will this adapter work?

BigCountry
Chula Vista, CA, USA
July 22, 2014

Will this work for a edelbrock 1406 I want to replace my 1954 Carter WCFB with a Edelbrock 1406. Will this adapter work?

Answers

July 23, 2014
EricM
Yes this adapter will adapt an Edelbrock 1406 carburetor to the Carter WCFB pattern.
1 answers

I am asking if this adapter will work on the Ford 239 Overhead valve intake manifold. It appears that the small base "teapot" carb is similar to the 4bbl manifolds made for the flattie. I am trying to purchase an original '54 239 4bbl manifold and want to

Bob
June 09, 2011

I am asking if this adapter will work on the Ford 239 Overhead valve intake manifold. It appears that the small base "teapot" carb is similar to the 4bbl manifolds made for the flattie. I am trying to purchase an original '54 239 4bbl manifold and want to

Answers

June 13, 2011
John
This adapter is designed to fit on the early WCFB small pattern intakes and accepts the later Edelbrock, Holley, Demon, etc. It works on our flathead intakes when running the 390cfm Holley carbs and has the following specifications to compare to your application to verify fit: Bore Size is 1.5" on the small side and tapers to 1.685" on the large side. Smaller Inner Bolt Pattern: Side to side is 3-3/4" center to center, Front to rear is 3-7/8" center to center. Outer Bolt Pattern: Side to side on inner pattern is 4-1/4" center to center, Side to side on outer pattern is 5-1/8" center to center, Front to rear is 5-5/8" center to center. If you have the smaller pattern intake this adapter would allow you to use our 390cfm Holley carburetors or any square pattern four barrel carburetor.
Page 1 of 1

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This Offy single 4-barrel intake fits the 1932-48 Ford V-8 and features a Carter WCFB bolt pattern. For best results, our techs recommend the Holley 390 CFM 4-BBL which requires the Holley Flathead adapter 135-1935B.

You may also need to purchase 560-6091, 4" tall carb spacer (in addition to 135-1935B) to use a Holley carb on this intake. The spacer gets the carb high enough so that the base will clear the water hoses.

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Offenhauser 1078 1949-1953 Ford Flathead 4-Barrel Intake Manifold
(Part #5601078)
                        

This Offy single 4-barrel intake fits the 1949-53 Ford V-8 and features a Carter WCFB bolt pattern. For best results, our techs recommend the Holley 390 CFM 4-BBL which requires the Holley Flathead adapter 135-1935B.

You may also need to purchase 560-6091, 4" tall carb spacer (in addition to 135-1935B) to use a Holley carb on this intake. The spacer gets the carb high enough so that the base will clear the water hoses.

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Holley 0-8007 390 CFM Classic Holley Carburetor w/ Electric Choke
(Part #4258007)
                        

Classic Holley carbs have been a staple for rodders around the world for decades. They're calibrated for use on stock to mildly modified vehicles and have that classic Holley look. Holley’s 0-8007 is calibrated and intended for small V8s or 6 cylinder engines as well as 2x4 street tunnel ram style set ups. Plus, it is Gold Dichromate coated for durability and classic Holley looks. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.

  • Gold Dichromate finish for corrosion resistance and classic Holley looks
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  • Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.
  • Single feed fuel inlet for easy installation
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Instructions (PDF)