General Category > Quadrajet Carb Talk and Tips

Buick Q-Jet 7043240

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oldsman70:
After I get the the base plate back from you , I am going to convert this carb to the race version ( remove the power piston , spring and pri. rods ) I have been runing 74/75 main jets , the smallest main jet I have is a 68 . Do you stock smaller ? Just for info what # main jet do you run in your Pontiac ? I also resized the lower idle air bleed as it was right at .080 , the upper was  .070 Now they are 70/70 , the main air bleed is .052 I think that should be ok for a main jet of 66/69 , Think ?
                                                                                                             tom

Cliff Ruggles:
Yes, we stock jets from 65 to 77.  I'd start out around 65-66 and see how it acts, should be pretty close.  I use 65 main jets in my own carburetor....Cliff

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