I have a Quadrajet 7040250 for sale, The choke plate is missing.
The car ran fine once it warmed up. There is a tag on it saying it was rebuilt. I was going to have it fixed with new choke, but I went with a new Edelbrock. I would like to get $50.00 for it. Email rmoths1@wi.rr.com if you're interested. Thanks Ron.

 

email sent

 

There was a request for a serial number.
The numbers I can see are 7040250 NF 3359
There is a number stamped under the fuel inlet 8a 38267.
I hope that helps. Ron.

 

After investigating this further this looks like it's the proper carb for 1970 Rally 350. Still for sale. Ron.