1967 427 390hp (L36) - Holley Carburetor

[Hib Halverson]

I reserched the Holley web site a bit and it looks like Holley may actually sell replacement float bowls for 4150s with side-hung floats, however, what they sell may not look the same way as the stock bowls look.

Check these web listings.

https://www.holley.com/products/fue...ts/carburetor_replacement_parts/parts/134-101

https://www.holley.com/products/fue...ts/carburetor_replacement_parts/parts/134-105

https://www.holley.com/products/fue...ts/carburetor_replacement_parts/parts/134-281

https://www.holley.com/products/fue...ts/carburetor_replacement_parts/parts/134-282

 

[motorman]

Now that I see the pictures, that leak is coming from the pressure side of the float valve. That's why it sprays anytime the engine is running.

Unfortunately, Holley does not service the float bowls for the 3811.

What I'd do is contact a carb specialty vendor such as the "Carb Shop" and see if they can repair it by installing a new soft plug.

like I posted before there is a "O" ring under that soft plug that is the seal. I have used fuel proof model pane dope for years with no come backs. gently tap around the edges to peen the area ,clean and use clear fuel proof model air plane dope for a fix the NCRS will never see.

 

[vettefinderjim]

Hello,

I have attached 3 images of the Carb for your review...the leak is streaming from the "frost plug" located on top of the rear float bowl (see image #4)...the numbers on the Carb are as follows: 3906633-E0
List-3811
2159

I thought that the Date Code on the Carb was 3 digits not 4...can someone kindly confirm??

The build date of the car is March 17, 1967, not sure if this carb is correct or not??

Any assistance is greatly appreciated!!

Thanks




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IT IS A CORRECT CARB FOR A 1967 CORVETTE, 427/390HP ENGINE. THE NUMBERS ARE ALL CORRECT. Due to restoration demand, HOLLEY remanufactured the carb and you have one. The 4 digit number 2159 means, First three digits= Month and day of manufacture August, the 215th day of the year, and forth digit=year of manfacture, in your case 9= 1979, 1989, 1999, or 2009. You will have to check with HOLLEY. They are still in business. They may even rebuild it for you.

https://www.holley.com/products/fuel_systems/carburetors/
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