Anyone know of a good source for a remanufactured q-jet ??

 

advance auto sells them. dunno about how good they are, i just know that they sell them.

 

sean murphey induction (SMI)
edelbrock
Jet carburation

I think they're all based around the non computer controlled variant however.

You should probably rebuild yours. That way when it inevitably screws up, at least you know what you did to it, so you can more easily troubleshoot it. And you'll learn something in the process. Starting with somebody elses screw up (cough, autozone), you're just starting out a couple hundred bucks more poor, with a black box, who knows what's in it or how well it'll run....

 

I bought one off of eBay for about $20 and am in the process of rebuilding it. As always with eBay, you take your chances... but last time I searched for "quadrajet" it literally returned about two dozen authentic results.

 

I had one rebuilt several years ago and should have just used the money for down payment on a new car....never worked right.

 

When you want something done right, sometimes you have to do it yourself.

 

jegs sells remanufactured q jets.

 

went with a rebuilt unit from advance --- so far doing fine -- I rebuilt an old carb I got from a friend, but it was a junker and needed replacing.....this reman unit seems pretty good so far......

 

Be carful when getting a reman Q-jet.........your odds of getting one that will not have leakdown problems is about 1 in 3. A lot of times the throttle shafts will not get checked for clearence and will sag which will lead to vaccum problems.

If you have a 305 I wouldn't reccomend a Jet performance one. Most aftermarket that SMI and Jet put out are the 750 cfm, which is too much for it. I don't know if jetting it down would help at all.....I've never tried it. mine's Jet peformance Q-jet is leaned with the mixture screws 1/2 turn past full lean and its still to rich at 3/4 or WOT. Anything less than 91 octane and it likes to pre-detonate and I'm only running about 26-28 degrees of timing, too much more or less than that and it stumbles too much and misses like crazy.

Honestly, I'd go for and edlebrock 500 or 600cfm, I've heard they're super reliable, peform will on mild engines and can be tuned for great gas mileage (if that's the direction you'd prefer to go) unless you have a larger cam, headers, and a taller profile manifold and higher flowing heads, I'd stay away from anything above 650cfm.

 

Holley makes direct replacement q-jets.