Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Diagnose a Quadrajet carburetor problem => Topic started by: Mr.Pontiac on June 10, 2013, 05:17:15 PM

Title: Help!!Confused a little on 7040263 carb. bypass???
Post by: Mr.Pontiac on June 10, 2013, 05:17:15 PM

Started out just changing accelerator pump but i noticed the base plate is drilled .052 for bypass, top of carb. is slotted for bypass but the body looks like it had holes for bypass but they are soldered up. Should i knock solder out?? What should i do???

Title: Re: Help!!Confused a little on 7040263 carb. bypass???
Post by: Cliff Ruggles on June 13, 2013, 05:08:50 AM

Most likely it's been commercially "remanufactured" at some point.  They install a "generic" calibration, which includes blocking the bypass holes in the main casting with lead plugs.

I remove all of their stuff here, and set them up like they came from the factory, with improvements....Cliff