Author Topic: Quesiton on Drilling Idle Tubes  (Read 1584 times)

Offline WideTrack

  • Garage guy
  • **
  • Posts: 30
Quesiton on Drilling Idle Tubes
« 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

Offline Kenth

  • Jet Head
  • ****
  • Posts: 443
Re: Quesiton on Drilling Idle Tubes
« Reply #1 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.

Offline WideTrack

  • Garage guy
  • **
  • Posts: 30
Re: Quesiton on Drilling Idle Tubes
« Reply #2 on: May 13, 2020, 07:53:04 PM »
Thanks Ken, I'll post a pic.