I've rebuilt many Q-Jets and none were junk because they were on vehicles I bought new and they weren't worn out. If you buy a rebuilt carb at your local parts store it will probably be junk. I recommend Mountain Man Fuel Systems. If you send them your carb and it will come back rebuilt and looking new. If you have a modified engine they can modify your Q-Jet so it will run right. They can covert your carb to electric choke and add a fast idle solenoid for your AC if you don't already have one.
I have a Jet Performance Q-Jet on the modified 355" in my '80 3/4 ton Chevy truck but I had a lot of problems with it.
https://www.mountainmanfuelsystemsl...ort_by=category_order&sort_order=asc
