[dmjlambert]

When I ordered my remanufactured Quadrajet from National Carburetors, I just selected the model year and engine size of my truck. Then I followed up with a phone call to tell them I wanted one with an electric choke. They built one for me with the throttle linkage for my year truck, but the rest was 1985-86 truck's carburetor body with an electric choke. Their sales staff is very knowledgeable and I was happy with the experience. So, I don't have the same model Quadrajet. Rochester made a huge number of slightly different Quadrajets and even if you got one stamped with the same number as yours on that middle body piece, it does not mean that all the other parts on it are from the same original carburetor or even same decade.

I think any filter you add belongs on the low pressure side of the fuel pump, and on the low pressure side is the only place where there are rubber hoses on the truck. If you have any doubts about the fuel pump or think it has huge amounts of crud in it, the fuel pump is cheap and fairly easy to replace.

The fuel tank is also fairly easy to replace. If you want to investigate, you can pull it out, turn the collar that holds the fuel sender and remove the fuel sender and have a good look at it, empty the fuel out and have a look inside and drain any crud out of it through the neck and through the fuel sender hole. There was a sock filter on the end of the fuel pickup line at the bottom of the tank, and that is replaceable. Some people have put vinegar and a steel chain or a bunch of nuts and bolts or gravel in there, and swished it around to clean theirs up.