Making Power 318

The lack of a kickdown leaves the clutch packs with insufficient pressure, continued use in this condition can cook your clutches, and it could feel "doggy" since the clutches are slipping all the time now- plus the fact that there is no kickdown when you get on it. All this is under the assumption that the trans wasn't rebuilt with a manual valve body...
In addition to the lack of kickdown linkage, if that 727 is the like year to the motor ('87?) it could be a lock up convertor; and depending how the swap was done, convertor could be stuck in "lockup" mode?
Need additional info on the whole setup.