Author Topic: Carb Setting and Adj. (426 Hemi)  (Read 7446 times)

Offline gcone

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Carb Setting and Adj. (426 Hemi)
« on: September 27, 2005 - 08:38:11 PM »
I need some advice on setting my carbs (426 Hemi).  The car came from Wyoming, where I would assume it would have been jetted for around 5-6000' altitude. I am in Minnesota, and we are at 2000'.  The car is running very rich. Anyway...

First off, I thought they should be Carter 4139 and 4140 carbs. The numbers I took off them were:
--Front: F39635S
--Rear: 2H49635S.  Does this make sense to anyone?  If I decode this correctly, (thankx to an old thread by Hemi71!) they are Carter 9000 series and 625cfm; but for a Chevy...not
  the 875cfm that the car came with.
If that is the case, what is the proper jetting, rod size and bowl setting?  I have changed the jets to the factory recc: which is:
--Front: 89.089 both primary and secondary
--Rear: Primary-89 (both left and right)
          Secondary-92 left, 77 right
What size metering rods should be used?...and the float setting?  Thx in adv. for hte help.
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Offline Chryco Psycho

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Re: Carb Setting and Adj. (426 Hemi)
« Reply #1 on: September 27, 2005 - 11:00:25 PM »
I do not have the specs handy , sould be listed on the internet from the carb #s though , I would check the float levels first

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Offline gcone

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Re: Carb Setting and Adj. (426 Hemi)
« Reply #2 on: September 28, 2005 - 08:23:36 AM »
Thx, Chryco.  After extensive digging, I found this website-the pdf is the detailed service manual for all Carter AFB Performance Series Carbs. 

http://www.federal-mogul.com/fmeconnect/technicalservices/downloads/1601.pdf
71 Tored Plymouth Hemi Cuda Rec.
69 Hemi Orange Dodge Charger RT
70 Calypso Coral Ford BOSS 302 Rec.
71 Bright Red Dodge Demon 340
70 Red Chevrolet Chevelle SS Convertible (L78)
05 Black C6 Vette Convertible
07 Black Ford Mustang Shelby GT500 Convertible
07 Black Dodge Charger SRT8
08 Black Dodge Challenger...on order@12/04/07