1966 dart gas cap question?

flathead31coupe said

so iam going the wrong way? to help with vapor lock...it does have the .006 orifice.... i was told to use it to help with vapor lock... ideas

Click to expand...

No, you are fine. The orifice though is not .006, but .060. Big difference.

The purpose of the return system is to lower fuel temperatures and THAT is what kills vapor lock.