Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Buy Quadrajet Parts, Quadrajet Kits, Service => Topic started by: slicer87 on November 15, 2010, 10:52:13 PM

Title: replacement idle tubes question?
Post by: slicer87 on November 15, 2010, 10:52:13 PM: I was wondering if the replacement idle tubes you sell need to be drilled to to the correct size. If they do how do you hold them for drilling?
Title: Re: replacement idle tubes question?
Post by: Cliff Ruggles on November 17, 2010, 05:00:32 AM: Unless requested, we leave them at .034".

They are drilled by hand with a pin vise, no need to hold them with anything more than your fingers.....Cliff
Title: Re: replacement idle tubes question?
Post by: slicer87 on November 20, 2010, 09:17:53 PM: Okay. My SBC 305 has headers and a aftermarket cam that has 270/276 advance duration, .440/.454 gross lift, and a 1600/5400 RPM range.

CamTiming: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake (4) ATDC 34 ABDC 109 210
Exhaust 47 BBDC (11) BTDC 119 216

Would you recommend enlarging the idle tubes from the stock size?
Title: Re: replacement idle tubes question?
Post by: Cliff Ruggles on November 23, 2010, 03:12:33 AM: What is the carburetor number?

Upper idle airbleeds?

Lower idle airbleeds?

Idle downchannel?

Idle bypass air?

thanks....Cliff
Title: Re: replacement idle tubes question?
Post by: slicer87 on November 23, 2010, 11:40:35 AM: Carb number is 17086003 0356JMX, don't know the sizes of the other stuff since I haven't taken the carb apart. The main air bleeds in the air horn are unbushed.
Title: Re: replacement idle tubes question?
Post by: Cliff Ruggles on November 24, 2010, 03:18:05 AM: Appears to be a later computer controlled unit. They are excellent carburetors, and the only thing the ECM controls is part throttle fuel.

They still respond well to high performance modifications, and have an adjustable upper idle airbleed system.

We sell complete HP kits for them, and tuning parts as well.....Cliff