Lockup converter question

I do have a 1981 318 engine with a lockup 904 transmission. Transmission went out just a few days ago. My question is, Can I put a non-lockup converter and transmission on my 318? What is the advantage of having a lockup converter if any? My car is a 1966 Dodge Dart that I restored. Thanks...
Pedro

Hi Pedro,
I am not a tranny guy by any means so I would have you ask Charrlie_S or Trailbeast or any of the other knowledgeable FABO members for their educated opinion. As far as the advantage of having a lockup tranny...when it is in lockup it basically becomes a direct drive (1:1 ratio) and this lowers the RPM’s which equates to better gas mileage. My 73 Dart is a cruiser...I have a hood tach and when it goes into lockup, I can see the RPM’s drop. I really like my lockup. Hope this info helps.
All the Best,
Greg