A lot depends on how long it's been sitting. If it's a number of years you many never get it clean enough to work properly.
I love Autoline rebuilt carbs. I just retired from about 45 years in the parts business and I don't think I ever sold another carb rebuilt by anyone but Autoline. Many larger auto parts stores will sell you an Autoline. Typically they are as good as bang on right out of the box, no adjustments needed...
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
A 2 barrel kit is like $30.00. I would rebuild it carefully it should be fine. My 61 carb did the same thing. It just poured gas around the gaskets. Just a note. Lay out a terry towel and tear the carb apart on the towel. The little check balls have a bad habit of rolling or bouncing onto the floor. That won't happen on a towel.
Have a good look at the carb where the linkage goes into the body - where the throttle shaft goes into the body of the carb. If there's any play there, like the hole is worn and no longer round, I would go for a rebuilt carb. You can get bushings to repair, but personally, I think I'd just get a rebuilt one.
If the linkage is tight and the float bowl isn't too gunked up, rebuilding it yourself should be pretty painless.
Just take your time and watch the check balls. One in the float bowl at the bottom of the eccelerator pump well. The other is held down by a " T " under the nozzle cluster. You will need a can of carb cleaner to soak the gaskets before removal especially the gasket under the spray nozzle cluster. Don't forget to check the float to make sure it is still sealed and not full of fuel. There are still lots of parts out there for these carbs. Email me if you have questions.
These are great tips Bill (a421cat), thanks for sharing!
I especially like the suggestion to dismantle it on a towel instead of just on the workbench or on a paper towel. I've spent too much time chasing those little check balls. I started using an old cookie sheet, but putting a microfiber cloth or terry cloth towel down would control those little balls even better.
I rebuilt a 1970 Chevy 350 2bbl carb about 8 or 9 years ago, and the baseplate to carb body was a little weird. On the rear of the carb, the gasket allowed for a small vacuum leak on each of the venturi's. The existing gasket was like that, and I used a similar gasket from the kit to replace it. Is that weird or is it just me?