i realized from doing research that on a 61 old dynamic with 394 engine i need check valve on end of filler tube to stop from fluid blowing out. we’re can i get one , looked everywhere

 

I had moved your other thread and then deleted it when I saw you posted this one.

You'll have to get that part from a car in the salvage yard. Here are 2 specialty salvage yards that might have the part. I've never ordered from them before but don't expect it to be cheap, they know what they have.

https://www.dvap.com/

http://www.ctcautoranch.com/