General Category > Quadrajet Carb Talk and Tips

Want to try something

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Frank400:
the first carb I built with one of Cliff's kit and parts and after reading his book was a 17059217 on a friend's 400 small block.  I am very pleased with the results, thanks to Cliff's parts and book.  Now I want to experiment something.  I'd like to relocate the upper idle air bleed to the air horn.  It currently is at .067 in the main body.  I'm planning to shut this bleed with epoxy and drill a hole in the air horn instead. 

     Should I go smaller than the actual .067 ?  I have to say the recipe is right on the money now, just want to try something new.  Same size but located in the airhorn what can I expect to happen ?

   Frank.

ejowrench:
I think the only reason why it is recommended to relocate the idle bleed to the air horn because it is easier to resize an air horn bleed  then an air bleed in the main body.  If you do not need to resize the bleed, I wouldn't bother changing the location.

77cruiser:
Drill & tap for a 6-32 brass set screw, then change to whatever you want or need.

ejowrench:
77Cruiser, That is what I do. I clamp a drill motor into my vise with the chosen size drill. T

Frank400:
do you guys hold the set screw in your hand while drilling ? 

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