I guess my point was: does anyone know why the Dodge head on the newer Plymouth motor would not work OK.
When I bought the motor, the seller had a finned head and 2 carbs....which he was not going to let me have. So he sent the motor with a stock type head. My mechanic said it didn't look so great, asked if I had any other similar heads available. Happened to have this Dodge one (don't know what year its from). He said it looked better and put it on. Runs OK, but not real zippy on takeoff. Recently got about 17 mpg. Runs smoothly. So, guess it's really not a big problem. Perhaps might do just a bit better with correct year head, but then, maybe not much.