Cliff's Quadrajet Parts and Rebuild Kits

General Category => Quadrajet Carb Talk and Tips => Topic started by: WideTrack on May 12, 2020, 02:42:26 PM

Title: Quesiton on Drilling Idle Tubes
Post by: WideTrack on May 12, 2020, 02:42:26 PM

Got new Idle Tubes from Cliff.  When enlarging them to spec, should I drill through what looks like a restriction at the top of the tube as well as the bottom before I install them or just one or the other?  I assume I should do both, otherwise what's the point? 

 Planning on opening them up to .038.  Idle down channel is .060

Title: Re: Quesiton on Drilling Idle Tubes
Post by: Kenth on May 13, 2020, 12:54:33 AM

The restriction to be enlarged is at bottom end of tube.
I have never seen original idle tubes for Quadrajet with restrictions at upper end.

Title: Re: Quesiton on Drilling Idle Tubes
Post by: WideTrack on May 13, 2020, 07:53:04 PM

Thanks Ken, I'll post a pic.