Quadrajet Carbs

[Alan Roehrich]

Originally Posted by GTX JOHN

I prefer to start with an old dirty untouched
core rather than ever use a Reman piece of junk.

There's a lot of merit in that statement. With the Q-Jet, if the castings match, and are in good shape, you can make something of a reman. You pretty much toss everything but the castings. There's a couple of holes they plug the feed air for the idle speed, and that causes them to run really rich. They usually cut the pin off of the power piston, which kind of ruins it, because that allows it to pull too low, (that pin sits on the lever for the Adjustable Part Throttle screw, doesn't really matter for a racing carburetor) but that's not a big deal in many cases, and it's a replaceable part.


I scavenge for every single part, I never toss anything usable, so I have a big tackle box of parts, and a couple of crates of complete cores and castings. So if I can score carburetors or parts cheap or free, I jump on it.

[Danny Ashley]

The way to tell a 1974 and earlier reman Quadrajet is to look at the vent hole behind the choke plate. They drive a "T" , used to retain the accelerator pump check ball in a Rochester 2 bbl, in that hole to prevent installing the air cleaner stud in it. When I see that I move along because I know it will have mis-matched parts and some of the other modifications Alan pointed out.