Quote Originally Posted by Langan
Come on someone has had to have tried this..........Jim
You will probably be OK with the 500,back in the Jimmy Carter "gas crisis" days Holley came out with the 450 CFM Economaster.This was a spreadbore replacement for the Quadrajet,the key is to run either carb with an intake with smaller runners for more velocity like the Edelbrock SP2P or the Streetmaster or Offenhauser Dual-Port,with the right matching Cam 22-25 MPG was attainable.