I have a 70 Dart that has an early 70's 360 and (year unknown) 727 trans. Trans is stock, engine has an edelbrock 1406 carb & performer intake. When I got the car, I neglected to notice someone had removed the kickdown linkage. I borrowed a smallbock kickdown setup from a friend & I can not get the shifting points to change. The car's 1-2 shift is at 20 mph ( a little late) & the 2-3 shift is at 47 mph (very late IMO). I have tried adjusting the kickdown linkage from one extreme to the other (and all points in between) but the shiting points do not change at all. I am starting to wonder if the trans itself might have problems. Any one ever have the same issue or have an opinion ? I am out of ideas.